Adding more injector safety

[jamesdaniels]

• Zone wrapper noops for our other helpers
• Add a warning / error on potential Zone / hydration issues
• Pass injection context to zoneWrapFn
• Pass injection context into the Promise wrapper
• beforeAuthStateChanged should not block

[davidgeary]

@jamesdaniels Just a heads up...

I've just installed RC4 and noticed the "Firebase API called outside injection context" warning in the console. The error message also includes a link to "Find out more" pointing to https://github.com/angular/angularfire/blob/main/docs/zones.md (see line 87 in zone.ts) but this file doesn't appear to exist at the moment.

[jamesdaniels]

@davidgeary thanks yeah, getting that page together now. You can likely safely ignore the warnings, they're only produced in dev mode and are intended to help developers track down any change-detection / rehydration instabilities

[davidgeary]

@jamesdaniels Ah, thanks. I was just starting to work through my code to see where the problem was, so you've saved me some time there!