BHV-16550: moon.Tooltip getting wrong position in 'RTL' Mode.

Issue:  when siblings of tooltip is translated in 'RTL' mode, position
of tooltip is not properly calculated, causing abnormal positioning of
tooltip.
Fix: added a check, which can calculate current position based on the
its parent bounds.
DCO-1.1-Signed-Off-By: Srinivas V srinivas.v@lge.com