fix(ui): Control panel alignment (#3650)
fix(ui): Control panel alignment (#3650)

Fixes the alignment of buttons inside the control panel.
shaka-project/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,tvoli/shaka-player,tvoli/shaka-player,shaka-project/shaka-player