Hard scrolling causes lock in long menus.

[nitz]

Reproduce:

• Add several files/directories to SD Card
• Enter load payload menu.
• Hold scroll down.

[nitz]

Looks like this is an issue caused by the WDT resetting the controller because UI tasks are being constantly processed during the scroll. Turns out you don't even have to enter the payload menu, just hold any navigation key at the main menu to trigger the behavior. Will follow this issue LVGL (#1839) to determine the correct way to solve this.

For now, "doctor it hurts when I do this" -> "don't do this".