[browser][MT] deadlocks in JavaScript.Tests.WebWorkerTest

[mkhamoyan]

deadlock in
WaitAssertsOnSyncCallback and WaitAssertsOnSyncJSExport

[dotnet-policy-service]

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

[pavelsavara]

Probably fixed by #99833