Support mouse pointer on external displays (2/2)

Limit mouse boundary to one display viewport.
Currently if desktop mode is enable, selects the topmost freeform display,
or find first external display if there is no freeform display.
Return the default display if desktop mode is not enable.

- Add getPointerDisplayId to find the preferred display.
- Limit update viewports from InputReader.
- obtainPointerController would also find the associated display id.
- Reload cursor resources if resolution or display changed.

Bug: 113559891
Test: atest inputfliger_tests
Test: ActivityView test app
Change-Id: Iffd01e27f5010ccfb0481a028658b7290ca6316d