Fix underline issue when PreeditStyle is REVERSE, HIGHLIGHT
Fix underline issue when PreeditStyle is REVERSE, HIGHLIGHT

Even if it is PreeditStyle without underline,
need to do UnderlineRuns for any markup underlines that may exist in text.

Change-Id: I6920dde2c7be93583eef4adfa5c026a671fcbbf6
Signed-off-by: Bowon Ryu <81ef83b0e730bb0994892ac8894b9df89cb62eed@samsung.com>

dalihub/dali-toolkit,dalihub/dali-toolkit,dalihub/dali-toolkit,dalihub/dali-toolkit