Merge changes from topics "product_runtime_apis", "product_var_hidden_api" into main am: 0a8fd140

Original change: https://android-review.googlesource.com/c/platform/build/+/2974393



Change-Id: I3dc9c70f0fe740e3cbefaf60b0a7e60e3b068168
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>