Fix tests after using react-query for observer count

[0xR]

Note github action are enabled for this fork and the tests should be green

• improved the cleanup so no state is left when a query is removed from react-query
• fixed a race condition where data was retrieved from cache before the cache was filled from firebase
• Fixed the auth subscription key which was not unique which means that a resubscription didn't occur. A test checked this happened if the queryKey of useAuthUser changed, it should result in a new subscription.

[codecov]

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@@ Coverage Diff @@ ## dev-release #54 +/- ## ============================================== Coverage ? 61.29% ============================================== Files ? 22 Lines ? 509 Branches ? 72 ============================================== Hits ? 312 Misses ? 197 Partials ? 0 

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[0xR]

@cabljac could you cut a dev release with this code merged? Maybe even make it a proper minor release since the current latest had various issues that are now solved?