[firebase_crashlytics] reportFlutterError => recordFlutterError

[lsaudon]

Description

Wrong method

Related Issues

None

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[creativecreatorormaybenot]

@lsaudon Are you ok with me integrating this into #1912? I will add that change and then you can decide if you want to close this PR or not.

Every single update needs a version bump and a changelog entry, so it would slow down merging the PRs.

[lsaudon]

No problem i can close my PR