Mms: The original picture can't replace after DUT landscape

Loading image is asynchronous execution,when call onItemLoaded
to resotre new image,other onItemLoaded will restore image again
which hold the old image uri and called by update() method,then
this CR occurs.

Only when loaded uri is match current ImageModel uri,it is
allowed to update image.

CRs-Fixed: 427183

Change-Id: Ia8bbd8395ac58c6274f4ffcc567e11a8bcd01864