fix: Disable preset combo scroll

[gselzer]

Yesterday in the lab we accidentally ran into #372, which motivated me to fix the bug. I did see #307, however apparently that PR does not fix the problem.

This PR overrides the wheelEvent method to ignore QWheelEvents on preset combo boxes, and adds a test ensuring as such.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.54%. Comparing base (c4b863d) to head (ef452a4).
Report is 11 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #432   +/-   ##
=======================================
  Coverage   90.53%   90.54%           
=======================================
  Files          90       90           
  Lines        9850     9853    +3     
=======================================
+ Hits         8918     8921    +3     
  Misses        932      932           

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[tlambert03]

oh awesome. please try to fix sliders too! :) i swear to god i've tried to fix it so many times and failed. i don't know why I struggled so much 😂 anyway thanks for this. will take a final look later today

[tlambert03]

ok, this is probably better than nothing, but what I really wanted in #372 was for the mouse event to pass up to the scroll area. with this approach, if you are scrolling and hit a combobox, then scrolling just stops (though, thankfully, no values are changed). Also, it still leaves things like sliders changing, so doesn't quite close #372.

I think we might have more global luck (and finer tuned control) by installing an event filter on the parent widget: https://doc.qt.io/qt-6/eventsandfilters.html#event-filters ... it should be able to intercept all events and decide whether or not to pass them down. (though, i feel like I've struggled in the past to get it to work). let me try something quickly

[tlambert03]

k, i'm gonna merge this as an improvement, but i removed the closes flag, sinceI consider that issue to still be unsolved while sliders are still sliding

edit: ah also: based on what you edited here, it looks like you're trying to solve it for the groups and presets widget ... but #372 was about the property browser