macOS: Don't require marked text before passing mouse down to input context

There are situations where the input context might want the event,
even if there's no marked text, for example when long-pressing A
with a US keyboard layout and getting the accent popup. In that
case we want a press somewhere else in the input item to move the
cursor, and commit the current preedit.

This is the same approach as NSTextView has, always calling
handleEvent, and in line with the recommendation from Apple:

 https://lists.apple.com/archives/cocoa-dev/2012/May/msg00539.html

Change-Id: Iff0861a4e604ab594d1ad4ccbb9367d8e0ffe4ef
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 848e3855f922e56a156ab8275f45cfb7a361acb5)
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

0 files changed, 0 insertions, 0 deletions