[Clock app] Timer label should not be clickable while viewing presets

Currently it is possible to click the timer label while viewing presets. This turns the clicked label to turn orange indicating that it can be edited but in reality it cannot be edited since the analog timer face is hidden.

Steps to reproduce:
1. Go to the timer page.
2. Click on the timer label (doesnt matter if it is seconds or minutes)

What happens:
The label turns orange since it received the mouse click event indicating that it can be edited.

What should happen:
Nothing. The timer label should not receive any input event while the user is viewing saved presets. The only way to edit the timer label should be by clicking on one of the saved presets.