Including ExoPlayer via relative paths currently breaks the import
logic of the common library settings file because it's referenced
from different directories. Fix this by resolving the setting path
to its canonical name.
Issue: #7554
PiperOrigin-RevId: 319043560
This removes a lot of duplication from the module configuration,
avoids divergence, and makes sure that only the important differences
to the default are visible in each module file.
PiperOrigin-RevId: 318024823