[browser][MT] Memory growth on worker could cause failure #86642
Description
When we compile the runtime with /p:MonoWasmBuildVariant=multithread and the web worker would cause memory growth, the linear memory buffer is disconnected from the original buffer on the main thread.
Example of allocation and resize on worker
Example of subsequent failure on main thread: the buffer is no longer instanceof SharedArrayBuffer but I think it's just disconnected.
Leads to
MONO_WASM: TypeError: Failed to execute 'decode' on 'TextDecoder': The provided ArrayBufferView value must not be shared.
at UTF8ArrayToString (http://localhost:8000/dotnet.native.js:379:22)
at Object.UTF8ToString (http://localhost:8000/dotnet.native.js:412:15)
at mono_wasm_trace_logger (http://localhost:8000/dotnet.runtime.js:211:32)
at wasm_trace_logger (http://localhost:8000/dotnet.native.wasm:wasm-function[142]:0x11902)
at callback_adapter (http://localhost:8000/dotnet.native.wasm:wasm-function[872]:0x58eec)
at mono_tracev_inner (http://localhost:8000/dotnet.native.wasm:wasm-function[867]:0x58cfb)
at mono_trace.13 (http://localhost:8000/dotnet.native.wasm:wasm-function[5213]:0x15b333)
at mono_runtime_class_init_full (http://localhost:8000/dotnet.native.wasm:wasm-function[5206]:0x15ab4e)
at do_init_vtable (http://localhost:8000/dotnet.native.wasm:wasm-function[294]:0x2793e)
at mono_interp_exec_method (http://localhost:8000/dotnet.native.wasm:wasm-function[277]:0x1ec85)
on the main thread.