Method returning Class panics when the selector contains a colon ("take:" is not a valid Ident)

Input C/C++ Header

__attribute__((objc_root_class))
@interface Foo
- (Class)take:(int)t;
@end

Bindgen Invocation

$ bindgen input.h -- -x objective-c

Actual Results

bindgen aborts:

panicked at bindgen/ir/context.rs:903:9:
"take:" is not a valid Ident

CXType_ObjCClass goes through ObjCInterface::from_ty(&location). For a method return type, location is the method cursor, so the invented interface is named take:.

- (Class)cls does not panic (no colon) but still invents struct cls instead of using objc::runtime::Class. - (id)take:(int)t and - (SEL)take:(int)t are fine (ObjCId / ObjCSel). A Class parameter uses the ParmDecl name, so it does not hit this.

This is not #3386 (typedefs named id / SEL / Class).

Expected Results

Do not abort. Map Class to the existing Class / id alias rather than treating the method cursor as an interface declaration.

Environment

bindgen: 0.73.1 (rust-lang/rust-bindgen 77cbc723)
clang/libclang: Homebrew clang 21.1.8
rustc: 1.97.1
target: aarch64-apple-darwin
OS: macOS

Start with bindgen/ir/context.rs around the panic at line 903 and trace how CXType_ObjCClass reaches ObjCInterface::from_ty for method return cursors. Reproduce the issue with the provided Objective-C header and bindgen invocation, then verify that Class return types no longer abort or invent an interface named after the selector, and instead use the existing Class/id alias.