Rework screen input methods

- Now consistent between CottonClientScreen and
  CottonInventoryScreen
- Mouse methods always call super and return true
- Keyboard methods call super if there's no focus
- keyPressed calls super and does nothing else for Esc and Tab
  (this was the old behaviour in CIS, now also in CCS)
- Fixed a bug where focus was released when clicking on focused
  widgets because the mouse coordinates weren't offset correctly
- Fixed CIS never releasing focus
- Fixed focus checking not using isWithinBounds
- Removed pointless null checks

0 files changed, 0 insertions, 0 deletions