[browser] File System Emscripten's errno values are based on WASI

[kjpou1]

Emscripten's errno values are based on WASI which uses 44 for ENOENT.

This is not the value that is expected in the NotFoundErrorIsExpected test.

This issue is opened to make sure the skipping of this test is addressed.

emscripten-core/emscripten#10157

Error numbers defined in the wasm runtime code.

var ERRNO_CODES={EPERM:63,ENOENT:44,

[Dotnet-GitSync-Bot]

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