Prevent showing TaskMenuView if icon isn't present

Also fixed another bug where the wrong layout
orientation was being applied when overview rotated
when launcher was in fixed portrait orientation.

Fixes: 160182914
Test: Tested w/ PIP, split screen,
w/o split screen w/ and w/o home rotation

Change-Id: Iccffb637ae5c22d07745f2108facd4de716dc8d3