patch 9.1.1380: 'eventignorewin' only checked for current buffer

patch 9.1.1380: 'eventignorewin' only checked for current buffer

Problem:  When an autocommand executes for a non-current buffer,
          'eventignorewin' is only checked from the buffer's last
          wininfo (overwrites win_ignore in the loop), not from the
          value of 'eventignorewin' in all windows showing the buffer as
          described (after v9.1.1084)

Solution: Fix the check and don't use wininfo, as that may only contain
          windows that recently showed the buffer. Consider all the
          buffer's windows in all tabpages (Sean Dewar).

closes: #17294

Signed-off-by: Sean Dewar <6256228+seandewar@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>