fix: Fix UI captions icon state (#4384)
fix: Fix UI captions icon state (#4384)

Reviewed-by: da39a3ee5e6b4b0d3255bfef95601890afd80709@anshgo01yal 
Co-authored-by: Joey Parrish <01f7614828b1b1d3276ee3e0e41175e15cda2e56@users.noreply.github.com>
Co-authored-by: Álvaro Velad Galván <bdf6f546e349cef6684103267e5925e69a5a4bf4@mirada.tv>

Closes #4358
shaka-project/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player