input: allow multiple gamepad inputs to be registered for one button in one frame

[soqb]

Objective

• Currently, (AFAIC, accidentally) after registering an event for a Gilrs button event, we ignore all subsequent events for the same button in the same frame, because we don't update our filter. This is rare, but I noticed it while adding gamepad support to a terminal app rendering at 15fps.
• Related to Lag seems to cause key release events to be missed #4664, but does not quite fix it.

Solution

• Move the edit to the Axis<GamepadButton> resource to when we read the events from Gilrs.

[github-actions]

Example alien_cake_addict failed to run, please try running it locally and check the result.

[nicopap]

This doesn't fix #4664. The issue mentions "key" and Alien cake addict, but it has no gamepad support only keyboard, this only fixes it for gamepad. So supposedly the issue exists for keyboard too.

[soqb]

ah that's unfortunate. i was not using winit in my testing so i would assume the issue lies in how we/them process window events.

[alice-i-cecile]

@soqb I've tweaked your original comment to reflect that this doesn't quite fix the linked issue so we don't have to re-open it / confuse future readers.

Merging now.

[soqb]

yep, it slipped my mind to change that in the description.

really cool to see how fast small changes like this can be merged first hand! 🚀