The very base class is the wrong place for it because
`FreeModSelectOverlay` inherits from it, and that one has different
assumptions and rules than "user" selection. In particular, in non-user
selection, more than one rate adjust mod may be active, which breaks the
mod speed hotkey's basic assumptions.
In the Mod selection area, the search bar's focus could be changed by pressing TAB.
However, when clicking outside of the search bar, the focus would be killed but two TABs were required to get the focus back on the search bar.
This happened because the action of clicking in an empty area would trigger the search bar to change its appearence, but not its internal state.
In my solution, I made the OnClick function aware of the search bar's state, so it would not only change its appearance, but also its state.
Now, after clicking in an empty area, there is only needed one TAB to select the search box again, as expected.
Starting from the end (which should be fine with the current number of columns, even on different/wider screen resolutions), and with a custom decay value when it reaches zero offset.