Linking with -s MAXIMUM_MEMORY=4GB and -s MODULARIZE=1 is very slow.

Normally, the emscripten linker runs in a couple of seconds. When setting the MAXIMUM_MEMORY option to a value > 2GB the link time increases to several minutes.

The time looks to be spent by the "acorn" optimizer, and is an issue for MODULARIZE=1 builds which generate a lot of JS runtime code.

**Version of emscripten/emsdk:**
emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.50 (9fdfa557c0c86afc55588846fbc8b19bd7205f85)
clang version 18.0.0 (https://github.com/llvm/llvm-project 14028ec0a62210d68a4dd7a046ac79c8c3b7727e)
Target: wasm32-unknown-emscripten
Thread model: posix

**Failing command line in full:**
/em++ -s INITIAL_MEMORY=50MB -s MAXIMUM_MEMORY=4GB -s EXPORTED_RUNTIME_METHODS=UTF16ToString,stringToUTF16,JSEvents,specialHTMLTargets,FS,callMain -s EXPORT_NAME=qtquickruntime_entry -s MAX_WEBGL_VERSION=2 -s FETCH=1 -s WASM_BIGINT=1 -s STACK_SIZE=5MB -s MODULARIZE=1 -s ALLOW_MEMORY_GROWTH -lembind [+ several .so files]

**Full link command and output with `-v` appended:**
(EMPROFILE=2 output)
profiler:INFO: start block "main"
profiler:INFO: start block "parse arguments"
profiler:INFO: block "parse arguments" took 0.001 seconds
profiler:INFO: start block "check_sanity"
profiler:INFO: block "check_sanity" took 0.000 seconds
profiler:INFO: start block "setup"
profiler:INFO: block "setup" took 0.003 seconds
profiler:INFO: start block "compile inputs"
profiler:INFO: start block "ensure_sysroot"
profiler:INFO: block "ensure_sysroot" took 0.000 seconds
profiler:INFO: block "compile inputs" took 0.001 seconds
profiler:INFO: start block "linker_setup"
profiler:INFO: block "linker_setup" took 0.068 seconds
profiler:INFO: start block "calculate linker inputs"
profiler:INFO: block "calculate linker inputs" took 0.683 seconds
profiler:INFO: start block "JS symbol generation"
profiler:INFO: block "JS symbol generation" took 0.089 seconds
profiler:INFO: start block "calculate system libraries"
profiler:INFO: block "calculate system libraries" took 0.001 seconds
profiler:INFO: start block "link"
profiler:INFO: block "link" took 0.503 seconds
profiler:INFO: start block "post link"
profiler:INFO: start block "emscript"
profiler:INFO: start block "get_metadata"
profiler:INFO: block "get_metadata" took 0.090 seconds
profiler:INFO: block "emscript" took 1.315 seconds
profiler:INFO: start block "binaryen"
profiler:INFO: start block "use_unsigned_pointers_in_js"
profiler:INFO: block "use_unsigned_pointers_in_js" took 199.120 seconds
profiler:INFO: block "binaryen" took 199.120 seconds
profiler:INFO: start block "final emitting"
profiler:INFO: block "final emitting" took 0.063 seconds
profiler:INFO: block "post link" took 200.499 seconds
profiler:INFO: block "main" took 201.853 seconds