Fix regression in ListView click handling

Regression caused by patch a607223f34

If an item click handler results in the ListView becoming detached
from the window, the performClick runnable could be executed twice.
Null out the mTouchModeReset runnable before running the click handler
so that it is not run by the detach handler.

Change-Id: I2fab60232027bb4876f9912088e0ffb9b17d308c
Ensure running mTouchModeReset when AbsListView is detached

mTouchModeReset should be executed when AbsListView is detached from window.
If not, when the AbsListView is re-attaced to window,
the child can retain a pressed state.

You can see this problem easily when you double-touch an item of
option menu very quickly.

Change-Id: I5aaa1fd5b95847efb2f5f1b5ec7cabe8eb85b237
Signed-off-by: Sangkyu Lee <sk82.lee@lge.com>