[browser] JSExport in lazy loaded assembly

[maraf]

1. Add JSExport to a class library
2. Mark that library with <BlazorWebAssemblyLazyLoad Include="ClassLibrary" />
3. Load the assembly and get exports

await INTERNAL.loadLazyAssembly("ClassLibrary");
await getAssemblyExports("ClassLibrary");

Throws RuntimeError: memory access out of bounds

[dotnet-policy-service]

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[pavelsavara]

It boils down to

• calling _mono_wasm_assembly_load with ClassLibrary to load it first time in mono_wasm_bind_assembly_exports
• and then with ClassLibrary.dll the second time from mono_wasm_get_assembly_export.

The second call would not find the DLL.

(In my test case it's actually .wasm file, but I think that's not relevant here)