Merge "Don't panic for unhandled product vars" into main am: 8e9ccda5 am:...

Merge "Don't panic for unhandled product vars" into main am: 8e9ccda5 am: 2485bcc6 am: 2e754626 am: 714cf7e6 am: 19c685f8

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2755066



Change-Id: I5e6f9d0264f67aee0aae176a6f4d0b76604c9802
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>