[browser][MT] hybrid globalization

[pavelsavara]

plan A)

• make hybrid globalization not supported with MT
• tree-shake hybrid JS code via rollup WasmEnableThreads conditional compilation
• ideally move the code to sub-folder
• also conditonal ICALs in corebindings.c
• switch off HG tests with MT

plan B) - applied

• reduce usage of mono_wasm_new_external_root, and stringToMonoStringRoot from hybrid
  • perhaps the string could be fixed in C# before making this call instead.
• wrap_error_root, wrap_no_error_root` [browser][hybrid] drop wrap_error_root,wrap_no_error_root #98365
• because they interact with GC, which could lead to deadlock on UI thread.
• load rules json on all workers - working on it in [browser][MT][hybridglobalization] Run HybridGlobalization threading tests #102595

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Issue Details

---

plan A)

• make hybrid globalization not supported with MT
• tree-shake hybrid JS code via rollup WasmEnableThreads conditional compilation
• ideally move the code to sub-folder
• also conditonal ICALs in corebindings.c

plan B)

• reduce usage of mono_wasm_new_external_root, wrap_error_root, wrap_no_error_root and stringToMonoStringRoot from hybrid
• because they interact with GC, which could lead to deadlock on UI thread.

Author:	pavelsavara
Assignees:	ilonatommy
Labels:	arch-wasm, area-VM-threading-mono, os-browser
Milestone:	9.0.0