qml: fix player controls inappropriately become hidden in compact mode

This should fix the issue where some controls in the player become hidden when switching views. I could not reproduce this with the normal mode, but it occurred to me with the compact mode and only in Qt 6.7.1 (not in Qt 6.2).

In most cases, a delayed binding should be enabled with a trigger. This is to control when the delay period begins. In fact, most of the delayed bindings are already enabled at an appropriate time at the moment through the when property, except the binding here.

Request review @chub.