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 am: 56bc1532

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



Change-Id: I747a69ee0370faf532780a988024f0fe370c93a9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>