[browser][MT] Fix Promise cancelation

[pavelsavara]

• fixed compareExchangeI32 🤦‍♂️
• unregister from FinalizationRegistry in upgrade_managed_proxy_to_strong_ref
• more testing if the runtime is still running
• testing if the promise holder is already disposed
• added exit to RuntimeAPI
• improve BlazorHosted WBT exit
• make assert_runtime_running always throw, in order to really protect the code after it.
  • make it not configurable by dropping withAssertAfterExit

Contributes to #98721

[maraf]

Please, filter out the noise in SignalR test log
appsettings.json in server project

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  }
}