Bug 911129 - [Keyboard][V1.2] After switching the keyboard layout, the cursor doesn't focus on text field
   -- action menu would not take focus when keyboard was been shown
   -- remove comment in keyboard manager since action menu is scrollable when there is a large list of items.
Merge pull request #12381 from mpizza/Bug_911129_lost_focus

Bug 911129 - [Keyboard][V1.2] After switching the keyboard layout, the c... . r=alive