In most cases, the places that were trying to avoid a transitive
dependency on `lib-exoplayer` when this duplication was introduced [1]
are already depending on it again, except for `lib-container` where the
dep is added in this change.
In general it seems fine for the tests of module A to depend
(transitively or directly) on module B even where the prod code of
module A **does not** depend on module B.
[1] <unknown commit>
PiperOrigin-RevId: 561660371