Merge "Deprecate fonts.xml and add hidden font_fallback.xml" into main am: a6fac5d6

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



Change-Id: I72c3f5d32e45b58c8e4c9689af5c8dbbeed1f76b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>