SDK / exoplayer

- Once the ability to add debug listeners is removed, analyticsCollector
  is the only component that needs to receive the events. Hence it is
  called directly.
- It seemed less confusing to do the same thing for (non-debug) video and
  audio events, and to have AnalyticsCollector no longer implement
  VideoListener and AudioListener directly. This clears up confusion that
  arises as a result of the debug and non-debug interfaces defining the
  same methods in some cases, and having to be careful not to end up
  calling the corresponding AnalyticsCollector method twice.

PiperOrigin-RevId: 351835491