Merge pull request #9946 from ian-liu/dialer/Bug847284_remain_caller_number_on_status_bar_while_user_typing_keypad

Bug 847284 - [Dialer] During calling, select keypad and input number, and press home key, statusbar contains the number entered by the user, r=@etiennesegonzac(cherry picked from commit b60033a071db7d9af1e2da55ff6bcb8de3ed03d9)