patch 9.0.1983: scrolling inactive window not possible with cursorbind

patch 9.0.1983: scrolling inactive window not possible with cursorbind

Problem:  Scrolling non-current window using mouse is inconsistent
          depending on 'scrollbind'/'scrolloff' and different from GUI
          vertical scrollbar when 'cursorbind' is set.
Solution: Don't move cursor in non-current windows for 'cursorbind' if
          cursor in the current window didn't move.

closes: #13219
closes: #13210

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>