Fix build configuration dependant Soong test

This change fixes a Soong test that is dependent on the build
configuration (from-source stub build vs from-text stub build) by
setting the test configuration to build from source stub and add
an additional test case configured with build from text stub so
that the expected behaviors of both from-source and from-text
stub builds can be tested.

Bug: 275570206
Test: m nothing && m nothing --build-from-text-stub
Change-Id: I483be27ad3eebbf6af050e80265859919fc28fd8