Merge "Move disable downloads to bazelrc from mixed build" am: be981e5e am: d76c9d2e

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2515275



Change-Id: Ic15897a61290c5b59e974dfc6406d604e46c5dee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>