Fix font loading for AppCompatTextView

Support lib tries to load the fonts using its own parser. When it fails,
it fallsback to ask to the regular font system with a strange font
request. This CL deals with that request and loads the font correctly.

Bug: 69093149
Test: Tested from the Studio side
Change-Id: I557cdb16fe0842dd9a2acbe65e216f31c665b7bf