"Don't show again" check box on the Startup Warning about 3 fingers gestures.

[lion4ks]

• I couldn't find this feature described in a dedicated issue or the docs.
• The suggestion is relevant for the trackpad.
• The suggestion is relevant for Magic Mouse.

Is your feature request related to a problem? Please describe.
It keeps asking to change to 4 fingers even though it works fine with 3 fingers.

Describe the solution you'd like
The additions of a checkbox to tell the app to don't ask again about this.

Describe alternatives you've considered
Asking here.

Additional context
Add any other context or screenshots about the feature request here.