Running 'firebase init database' overwrites the firebase.json file completely.

[NickChittle]

[REQUIRED] Environment info

firebase-tools:

firebase --version
9.10.0

Platform: Ubuntu

[REQUIRED] Test case

[REQUIRED] Steps to reproduce

• firebase init firestore
• Go through firestore workflow
• cat firebase.json // Observe that this file has some firestore related configuration in it.
• firebase init database
• Go through the database workflow
• cat firebase.json
• The firestore section has been overwritten, which does not happen when combined with other products.

[REQUIRED] Expected behavior

Firebase init should be additive for all products

[REQUIRED] Actual behavior

Firebase init database overwrites all other configuration.

[samtstern]

@NickChittle yikes! I was able to reproduce this.

[samtstern]

Looks like this bug was introduced here:
https://github.com/firebase/firebase-tools/pull/2884/files#diff-2373d53b5da0f05c0be1ca69b7959c395f646e20128351f36d66a4a8ce7b76bfR119