[main] Update dependencies from dotnet/runtime dotnet/efcore (#31020)

[main] Update dependencies from dotnet/runtime dotnet/efcore


 - Do not declare iOS and Android support everywhere
- runtime update includes new annotations making non-support obvious
- see dotnet/runtime#49354 (w/ a similar Android PR coming soon)

 - !fixup! Fix typo in item group name

 - !fixup! Set `$(RemoveDevicePlatformSupport)` in correct project
- not needed in BlazorManifest.csproj
- but, is needed in dotnet-install-blazoraot.csproj

 - suppress

 - Fixup