[fix] Fixed minor WASM issues and enabled multithreading, updated dependencies.

[Arlodotexe]

Overview

Fixed minor WASM issues and enabled multithreading. Updated dependencies. Updated to .NET 7 preview 4. Had to disable the IL linker to use the latest Uno version.

Checklist

This PR meets the following requirements:

• [x] Tested and contains NO breaking changes or known regressions.
• [x] Tested with the upstream branch merged in.
• [x] Tests have been added for bug fixes / features (or this option is not applicable)
• [x] All new code has been documented (or this option is not applicable)
• [x] Headers have been added to all new source files (or this option is not applicable)

Additional info

Not provided

[Arlodotexe]

/azp run

[Arlodotexe]

/azp run