Merge "legacy camera api: Enable zsl if preview frame rate is supported." into...

Merge "legacy camera api: Enable zsl if preview frame rate is supported." into sc-dev am: 84b903b0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/14526042

Change-Id: I733055791c2a0edb4aa372bc451e2be1360ef5d2