Mms : Fix MessageWidget title doesn't update in RemoteView

Fix MessageWidget displays on homescreen don't change with system language.
The text view doesn't update in remote view is because it is setted
freezesText to true. When this attribute is setted, the text view will
include its current complete text inside of its frozen icicle in addition
to meta-data such as the current cursor position. After remove this
attribute, the title updated when language change.

CRs-Fixed: 661319

Change-Id: Idcfa377b090fd1c2689450705d9260a984dc59f1