Add hyphenation to customize button text.

In some languages, customize may be a long word which doesn't fit in a
single line and should be hyphenated.

Bug: 228329886
Test: locally on device
Change-Id: Ibf647fc4c18b3eb927f2b6f6ca018f2b38e6f7b1

res/layout/dream_preference_layout.xml

@@ -59,6 +59,7 @@
             android:layout_height="wrap_content"
             android:visibility="gone"
             android:text="@string/customize_button_title"
+            android:hyphenationFrequency="full"
             app:layout_constraintTop_toTopOf="@+id/preview"
             app:layout_constraintBottom_toBottomOf="@+id/preview"
             app:layout_constraintStart_toStartOf="@+id/preview"