Added routine to ignore text selection when longtap on handle from OSP.

Added routine to ignore text selection when longtap on handle from OSP.

[Title] Added routine to ignore text selection when longtap on handle from OSP.
[Issue#] N/A
[Problem] When longtap on handle from OSP, text selection is cleared.
[Cause] When longtap on handle, textSelectionDown function is called from OSP.
        And then, function to clear text selection is called in textSelectiondown function.
[Solution] Added routine to ignore text selection when longtap on handle from OSP.

Change-Id: Idea04ec51ba2f1cc3eb9929c856453f17f4dca35