Merge "Revert "Do not generate aconfig_flags.textproto"" into main am: 68662040 am: ebdb7b84

Original change: https://android-review.googlesource.com/c/platform/build/+/2803994



Change-Id: I58dffbcc9c9015d726f21024fe435f5e80d95bae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>