Add delay before switching indicator's popup on hover

[mks-h]

Problem

It's hard to pause music because, on the cursor's way to the button, it goes on top of another indicator for a few milliseconds, and so the popup switches.

https://user-images.githubusercontent.com/51861383/130642928-d7b5d782-135c-43d4-9b81-8015613c607f.mp4

Proposal

Add delay before switching indicator's popup on hover.