[flang] crash with `_FortranAioBeginExternalListOutput` bind(C) name

Redefining of Fortran-runtime routines often leads to segfault, or internal compiler errors.

Considering the following code:
```
subroutine IOBegin() bind(C, name="_FortranAioBeginExternalListOutput")
end subroutine

print *, "a"
end
```

flang gives a Segmentation Fault:
```
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
Stack dump:
0. Program arguments: /cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang -fc1 -triple x86_64-unknown-linux-gnu -S -mrelocation-model pic -pic-level 2 -pic-is-pie -target-cpu x86-64 -mllvm -x86-asm-syntax=intel -vectorize-loops -vectorize-slp -fversion-loops-for-stride -resource-dir /cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/lib/clang/23 -mframe-pointer=none -O3 -o /app/output.s -x f95 /app/example.f90
#0 0x0000000004574148 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x4574148)
#1 0x0000000004571334 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#2 0x00007c8c42442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#3 0x0000000004cdef67 mlir::Value genDataTransferStmt(Fortran::lower::AbstractConverter&, Fortran::parser::PrintStmt const&) IO.cpp:0:0
#4 0x0000000004a17ef6 void Fortran::common::log2visit::Log2VisitHelper<0ul, 93ul, void, Fortran::common::visitors::visit<(anonymous namespace)::FirConverter::genFIR(Fortran::lower::pft::Evaluation&, bool)::'lambda0'(auto const&)>(auto&&) const::'lambda'(auto)>, std::variant, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference> const&>(Fortran::common::visitors::visit<(anonymous namespace)::FirConverter::genFIR(Fortran::lower::pft::Evaluation&, bool)::'lambda0'(auto const&)>(auto&&) const::'lambda'(auto)>&&, unsigned long, std::variant, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference, Fortran::common::Reference> const&) Bridge.cpp:0:0
#5 0x0000000004a1e9a9 (anonymous namespace)::FirConverter::lowerFunc(Fortran::lower::pft::FunctionLikeUnit&) Bridge.cpp:0:0
#6 0x0000000004a20aa4 Fortran::lower::LoweringBridge::lower(Fortran::parser::Program const&, Fortran::semantics::SemanticsContext const&) (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x4a20aa4)
#7 0x0000000004887cfc Fortran::frontend::CodeGenAction::beginSourceFileAction() (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x4887cfc)
#8 0x00000000045d7b95 Fortran::frontend::FrontendAction::beginSourceFile(Fortran::frontend::CompilerInstance&, Fortran::frontend::FrontendInputFile const&) (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x45d7b95)
#9 0x00000000045c4ddf Fortran::frontend::CompilerInstance::executeAction(Fortran::frontend::FrontendAction&) (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x45c4ddf)
#10 0x00000000045e2d7f Fortran::frontend::executeCompilerInvocation(Fortran::frontend::CompilerInstance*) (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x45e2d7f)
#11 0x00000000027f16f5 fc1_main(llvm::ArrayRef, char const*) (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x27f16f5)
#12 0x0000000002694381 main (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x2694381)
#13 0x00007c8c42429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#14 0x00007c8c42429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#15 0x00000000027f01b5 _start (/cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin/flang+0x27f01b5)
flang-23: error: unable to execute command: Segmentation fault (core dumped)
flang-23: error: flang frontend command failed due to signal (use -v to see invocation)
flang version 23.0.0git (https://github.com/llvm/llvm-project.git 7584c280631a90d72e49e3ec5b9f4f1d3609bd98)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /cefs/78/7875cf303f33f8df9ec3e0f3_clang-llvmflang-trunk-20260114/bin
flang-23: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
flang-23: note: diagnostic msg: /tmp/example-96e632
flang-23: note: diagnostic msg: /tmp/example-96e632.sh
flang-23: note: diagnostic msg:

********************
Compiler returned: 254
```

Reproduction is here: https://godbolt.org/z/PjbeYshhY

Another example is defining `_FortranAProgramStart` like:
```fortran
subroutine Start(i) bind(C, name="_FortranAProgramStart")
integer, value :: i
end subroutine Start
end
```

That will give the following message:
```
loc("/app/example.f90":15:1): error: 'llvm.call' op incorrect number of operands (4) for callee (expecting: 1)
error: Lowering to LLVM IR failed
Incorrect number of arguments passed to called function!
call void @_FortranAProgramStart(i32 %0, ptr %1, ptr %2, ptr null)
error: failed to create the LLVM module
Compiler returned: 1
```

None of this should happen.

Start with the Fortran reproducer and the stack frame in IO.cpp, particularly genDataTransferStmt while lowering the PrintStmt. Investigate how the bind(C) name _FortranAioBeginExternalListOutput affects this path, then verify that flang compiles the reproducer without a segmentation fault or internal compiler error.

Written by the indexing model from the issue text.