WebGL freeze during SDK closing

[bitsandfoxes]

Calling unityInstance.Quit() causes the SDK to dispose the hub here

sentry-unity/src/Sentry.Unity/SentryUnitySDK.cs

Line 95 in 9b749d4

_dotnetSdk.Dispose();

where the site hosting the webGL player then gets stuck.

[bitsandfoxes]

This can easily be reproduced with out samples game and clicking the Quit button.

[ziggyeye]

This is a severe issue impacting us from launching soon. Please give us an update soon and prioritize this.