[wasm][coreclr] Disable remaining madvise calls on wasm

[radekdoulik]

No description provided.

[Copilot]

Pull request overview

This pull request disables remaining madvise system calls for WebAssembly (WASM) targets across both CoreCLR and native libraries. WebAssembly doesn't support madvise operations, so these calls need to be conditionally compiled out to prevent runtime issues.

Key changes:

• Added !defined(TARGET_WASM) guards to madvise calls in native I/O and CoreCLR memory management code
• Introduced early return in GCToOSInterface::VirtualReset for WASM targets
• Updated conditional compilation for memory advise operations in PAL mapping code

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/native/libs/System.Native/pal_io.c	Added TARGET_WASM exclusion to MADV_DONTFORK conditional compilation and updated corresponding comment
src/coreclr/pal/src/map/map.cpp	Extended platform exclusion in MAPMarkSectionAsNotNeeded to also skip WASM targets alongside Android
src/coreclr/gc/unix/gcenv.unix.cpp	Added WASM guards to multiple madvise calls in VirtualDecommit and VirtualReset, with early return optimization for WASM in VirtualReset