[mono] Include filename in Invalid image error messages

[mdh1418]

Fixes #31649
Fixes #31650

Testing:
Reproduced Error via
<Runtime Repo Root>/build.sh /p:RuntimeFlavor=mono
Removing [ActiveIssue("https://github.com/dotnet/runtime/issues/31650", TestRuntimes.Mono)] in AssemblyTests.cs
Running dotnet msbuild /t:RebuildAndTest /p:XunitMethodName=System.Reflection.Tests.AssemblyTests.LoadFile_NoSuchPath_ThrowsFileNotFoundException

Fixing issue resulted in no errors.

[CoffeeFlux]

I think we should use mono_error_set_simple_file_not_found for some of these FileNotFoundExceptions. It seems to already include the file name in its error message and includes a nicer error message.

Additionally, we should make the change to include the filename with the error message in more than just the function calls failing the tests. There are some cases where it doesn't make sense to do so because we have an in-memory assembly (e.g. mono_error_set_bad_image_by_name (error, "In memory assembly", "0x%p", assembly_data);) but otherwise we should try and include it across the board. For FileNotFound, the main candidates are the two calls in icall.c, but we have a bunch of invalid image calls in metadata.c and aot-runtime.c that seem like they would benefit from this.

[danmoseley]

Please add exactly one area label if the bot doesn't. It trains the bot

[CoffeeFlux]

Mostly looks good, just a few little things to fix up.

[CoffeeFlux]

So close! Watch out for whitespace changes.

[CoffeeFlux]

Looks good, thanks!