Leaving the media item that has been passed in unchanged, ensures that the
media item in the timeline is equal to the media item that the user has
passed into the player. The value of the tag is the uid of the window,
meaning this is redundant information.
#minor-release
PiperOrigin-RevId: 460542246
(cherry picked from commit b61a06ba2f1aa4cc75dc1702ad94e483101adc51)