The setting 'timestampsInSnapshots: true' is no longer required and should be removed

[wceolin]

[REQUIRED] Describe your environment

• Operating System version: MacOS 10.13.6
• Browser version: Chrome 85.0.4183.121
• Firebase SDK version: 7.22.0 / 7.21.0
• Firebase Product: Firestore

[REQUIRED] Describe the problem

Steps to reproduce:

When we use the merge: true option in the settings (implemented by #3464), we get the error below even though we are NOT setting timestampsInSnapshots to true:

@firebase/firestore: Firestore (7.22.0): The setting 'timestampsInSnapshots: true' is no longer required and should be removed.

Relevant Code:

https://codesandbox.io/s/firebase-merge-settings-dxbx1?file=/src/firebase.js

firebase.firestore().settings({ merge: true });

[thebrianchen]

Thanks for filing the bug report with a repro! I've repro'd it on my machine as well. Will look into this deeper next week.