Add support for databinding in android_local_test.

Note that Android tests can successfully depend on libraries that have databinding enabled, but they seem to miss top-level generated files such as androidx.databinding.DataBinderMapperImpl which seems to only be generated in terminal/binary nodes in the build graph. This updates android_local_test to behave more like android_binary.

Much of the code added to AndroidLocalTestBase is copied from AndroidCommon since it doesn't rely on AndroidCommon like AndroidLibrary, AndroidBinary, and AndroidTest do.

Note that from what I can tell, this doesn't actually use the test-based parameters for the databinding tools and instead treats the build like android_binary. That seems to be consistent with android_test.

Finally, this will introduce an incompatibility with kt_android_library: if the test itself wants to do any databinding generation, it won't work without a package change since the Kotlin code needs to be compiled in a separate library (which would need databinding enabled).

The new test is mainly verifying that databinding properties are correctly being passed for android_local_test. The new databinding-specific test was verified as failing without the AndroidLocalTestBase changes.

RELNOTES: Fix data-binding generation for android_local_test.
PiperOrigin-RevId: 339386521