Fix for MAINT-7531 Second comment with text 'Write a comment...' appears, when...

Fix for MAINT-7531 Second comment with text 'Write a comment...' appears, when user post comment to Profile Feed and MAINT-7651 Cannot post new message in feed because the 'Share something...' Share button never becomes active. The fix was in Dullahan Mac keyboard code - used to send a keyb event and then char code after for down and not for up.  Now sends it for up and not down and works as expected for these 2 test cases as well as some JavaScript keyboard test pages