[Blazor][MT] reduce synchronous calls from JS

[pavelsavara]

• update runtime type definitions
• make invokeDotNetFromJS undefined in MT
  • which will throw and point user to use async alternative
• make async
  • UpdateRootComponentsCore
  • updateWebAssemblyRootComponents
  • updateRootComponents
  • refreshRootComponents

Contributes to #54365 (comment)

[dotnet-policy-service]

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[lewing]

should this be closed or updated?

[javiercn]

My understanding is that this would be used for multi-threading, however, this introduces a behavior change, as the thread will be yielded before calling into .NET.

If this is not needed right now, I think we should park it.