Many usages are needed to support other deprecations and some
can be replaced by the recommended direct alternative.
Also replace links to deprecated/redirected dev site
PiperOrigin-RevId: 601795998
(cherry picked from commit ed5b7004b435f71c5a37f5db12c3641fbba9be48)
As most classes are used via interface only and people depending on it locally can always find the Javadoc in Android Studio directly, we don't plan to add Javadocs for these extensions module in developer.android.com.
PiperOrigin-RevId: 521993756
Also fixed the javadoc link in devsite and removed javadoc links from decoder extensions as it is not published yet on developer.android.com.
#minor-release
PiperOrigin-RevId: 520636868