[wasm coreclr] enable corerun on nodeJS

[pavelsavara]

• implement debugger break
• make corerun to statically link dependencies
• make corerun to use NODERAWFS to access host file system to load managed assemblies
• pass shell env variables to emscripten/corerun

[Copilot]

Pull Request Overview

This PR enables the corerun host application to work on Node.js for WebAssembly (WASM) CoreCLR builds. The changes implement Node.js-specific functionality and remove browser-specific assumptions to allow running .NET assemblies directly in Node.js environments.

Key changes:

• Replace inline assembly debugger break with Emscripten's debugger function
• Add static linking support for WASM builds with Node.js file system access
• Implement environment variable passing from Node.js to Emscripten runtime

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/coreclr/pal/src/arch/wasm/stubs.cpp	Replace inline assembly with emscripten_debugger() for proper Node.js debugging
src/coreclr/hosts/corerun/corerun.js	Add JavaScript pre-run script to copy Node.js environment variables to Emscripten
src/coreclr/hosts/corerun/corerun.hpp	Add WASM-specific conditional compilation to disable dynamic library loading
src/coreclr/hosts/corerun/corerun.cpp	Implement static symbol resolution for WASM builds instead of dynamic loading
src/coreclr/hosts/corerun/CMakeLists.txt	Configure WASM build with static linking, Node.js file system, and required libraries
src/coreclr/hosts/CMakeLists.txt	Enable corerun build for WASM targets alongside existing corewasmrun
docs/workflow/building/coreclr/wasm.md	Update documentation to reflect corerun usage instead of corewasmrun for Node.js

[AaronRobinsonMSFT]

This looks great, thank you. Please address the CMake feedback and then let's get this merged!