Adjust margin to fix title overlapped with arrow

When both display size and font size are changed to largest option, a
word in the title of subsetting page will probably be wrapped into
multiple lines. Update the margin end of expanded title to prevent from
wrapping a word into multiple lines.

Fixex: 177969094
Test: visual verified
1) Enlarge both display size and font size as largest
2) Settings -> Display -> Lock screen -> Tap to check phone
or
Settings -> Notifications
3) Observe these titles of pages

Change-Id: Icecdf912e4764cb4592ff460cbc12cc1a7dd6b48