Merge "Turn on metalava sandbox warning in all droiddoc metalava invocations."...

Merge "Turn on metalava sandbox warning in all droiddoc metalava invocations." am: 4e372f78 am: 9ec9b604 am: 578c91fe am: 1d8e764e

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/1323176

Change-Id: Idb72dc20b486397fa8006e651823faf825badc43