Merge "Deprecate fonts.xml and add hidden font_fallback.xml" into main am: a6fac5d6c7 am: 38d368a926

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2670877

Change-Id: I5eed18933be0589799aca9122ea2af3d9145ddd2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>