Merge "aconfig: update error message in modify_parsed_flags_based_on_mode" into main am: 9cd08c66a4

Original change: https://android-review.googlesource.com/c/platform/build/+/2883810

Change-Id: Ifb6a5be4ec0a5ded4ca3b936d184699bc8061fd1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>