isSupported fixes

[jamesdaniels]

isSupported() had bugs in messaging, performance, and analytics.

• in messaging, isSupported was not checking for the existence of window or indexedDB before validating that indexedDB is openable
• in performance and analytics, navigator was not being checked for correctly !navigator should be typeof navigator !== 'undefined since it's a global. This led to runtime failures.
• further I dry'd up performance and messaging to use the same areCookiesEnabled test

Further, the indexedDb check was not working correctly in AppCheck due to checking for it on self (which isn't available in all environments). I addressed this and dry'd up our typeof indexedDb checks to all use isIndexedDBAvailable().

[changeset-bot]

🦋 Changeset detected

Latest commit: b550e8d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 28 packages

Name	Type
@firebase/app-check	Patch
@firebase/app-check-compat	Patch
@firebase/performance	Patch
@firebase/performance-compat	Patch
@firebase/messaging	Patch
@firebase/analytics	Patch
@firebase/messaging-compat	Patch
@firebase/analytics-compat	Patch
@firebase/util	Patch
firebase	Patch
@firebase/app-compat	Patch
@firebase/app	Patch
@firebase/auth-compat	Patch
@firebase/auth	Patch
@firebase/component	Patch
@firebase/database-compat	Patch
@firebase/database-types	Patch
@firebase/database	Patch
@firebase/firestore-compat	Patch
@firebase/firestore	Patch
@firebase/functions-compat	Patch
@firebase/functions	Patch
@firebase/installations-compat	Patch
@firebase/installations	Patch
@firebase/remote-config-compat	Patch
@firebase/remote-config	Patch
@firebase/storage-compat	Patch
@firebase/storage	Patch

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[github-actions]

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[jposuna]

LGTM for performance. Thanks for making this change!

[hsubox76]

Looks good, thanks for being so thorough!

[egilmorez]

Looks like no new doc strings, lmk if I'm wrong about that. Thanks!