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: I5ab9f7410d576a235de65d3364f3303d5f17e539