Ia012232ba2856e0757289982bc3045d948ff4aa8 replace the "Autofill service"
preference title with the earlier summary string. The change in title
causes search to not find the preference anymore. This change adds back
the title in xml, which makes search find it again. The Controller code
still overwrites the title with the application name.
Also fixes DefaultAutofillPreferenceControllerTest.
Bug: 192403526
Test: manual - clear Settings Services storage -> search "fill" -> click
link
Test: make -j64 RunSettingsRoboTests \
ROBOTEST_FILTER="com.android.settings.applications.defaultapps.DefaultAutofillPreferenceControllerTest"
Change-Id: I9714b3efd2a5a7d9ee7eef345415fa020ef0dc61
239b58e60a