[browser][ST] trimming

[pavelsavara]

• System.Collections.Concurrent.ConcurrentQueue in System.Threading.ThreadPoolWorkQueue doesn't need to be concurrent
• Monitor.Wait in System.Threading.Tasks.Task.InternalWait
• System.TimeZoneInfo.TryGetLocalTzFile touching File in invariant
• System.TimeZoneInfo::.cctor -> Utf8StringMarshaller/ManagedToUnmanagedIn
• System.Threading.LowLevelMonitor.Wait
• System.Threading.Thread.Sleep
• Mono.HotReload.FieldStore
• Mono.HotReload.InstanceFieldTable/InstanceFields
• JavaScriptExports.LoadLazyAssembly, LoadSatelliteAssembly, DumpAotProfileData

https://github.com/DamianEdwards/WasmClientSideValidation/blob/5f07e2f54fc43935b3f3c40e5bcf4899ba118e37/ClientSideValidator/ILLink.Substitutions.xml

[dotnet-policy-service]

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

[dotnet-policy-service]

Tagging subscribers to 'size-reduction': @eerhardt, @SamMonoRT, @marek-safar
See info in area-owners.md if you want to be subscribed.