Fixes: 945d7c1eda
Previously, we would have a button with empty string added to the layout
for non DVD/PGS subtitles. This would cause there to be an invisible
button present that would take up space and could still be clicked
despite being invisible when the current subtitle track was not DVD/PGS.
The idea was that the button would be invisible for regular subtitle
tracks, and be visible as "[ ]"/"[F]" for DVD/PGS subtitle tracks.
This commit modifies the bar and box layouts to only add this button if
the current subtitle track is DVD/PGS. This results in there no longer
being an invisible button, and also prevents it from taking up space.
The button is added to layout as before when the current subtitle track
is DVD/PGS, matching the same logic as before.
d0bc907806