Merge "Revert "aconfig: cache flag value in generated java code"" into main...

Merge "Revert "aconfig: cache flag value in generated java code"" into main am: 0989dcd6 am: 104d67da

Original change: https://android-review.googlesource.com/c/platform/build/+/2809793



Change-Id: I94bc9d6e260ddfc7c3daaafb62df8ac9e63071b1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>