Add a setting to disable mouse-wheel scrolling

[zadjii-msft]

This is in lieu of having actual mouse bindings. Some people might actually want the mouse to not scroll, or might want to pass the mouse scrolling through.

Until we have proper mouse bindings, this settings should suffice.

note 11/8/2021

This task is a "instead of #1553" task. If we just do #1553, then this isn't relevant.

note 2/22/2022

I'd add this as a profile setting, experimental.mouseWheelScrolling: bool. Probably just the same as #11710. Since we're using this as an "escape hatch" issue while we wait for the architecture to do #1553 right, I'd just go ahead and disable all wheel scrolling with this setting - including opacity scrolling and zooming.

[bloem777]

My experience is that scrolling in a tmux window not possible at the moment.

[zadjii-msft]

@bloem777 That's correct, mouse mode doesn't work quite yet. Please refer to #545, #376

[andreykaipov]

I added "historySize": 0 to my profile to disable scrolling.

Can't scroll if there's nothing to scroll to! 🙃