Handle MInput.MouseData.WheelDelta jumps when changing window focus or opening commands

### I am planning on implementing this myself

No

### Describe your request

`MInput.MouseData.UpdateNull()` gives its ``MouseState``s their default values, that when updated normally via `MInput.MouseData.Update()` causes a large `MInput.MouseData.WheelDelta` as the actual polled mouse state scroll value will be very different from the previous default struct value.
I don't know the extent of removing the default value assignments entirely, but keeping the non-default scroll values around would fix this.

Additionally, while `MInput` does not update its input values when the window is unfocused or the commands menu is opened, the XNA/FNA side of things does. This allows the user to scroll the mousewheel with the game unfocused/commands opened, and only when switching back `MInput.Update()` runs, which may result in very different scroll values, i.e. a large `MInput.MouseData.WheelDelta`. Setting `MouseData.PreviousState` to `MouseData.CurrentState` when the window gains focus/commands are closed (before `MInput.Update()`) would fix the remaining issue.

These *are* slightly hacky solutions, but it's what I can think of.

### Additional context

_No response_