Camera: Fix request metadata override for repeating request am: d1d051a002 am: 3e2bdbcf89 am: 5a7830ff27

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/12419439

Change-Id: I2308cf4528ba055f0c8eaa9086fb93f92bf295ff