Change PreferenceController#getSummary return type.

Return CharSequence instead of String.

All user visible string should be modeled as CharSequence.

Bug: 73950519
Test: robotest
Change-Id: I30befef0c33f94351d4a2774e283bd1ed804aa8b

src/com/android/settings/applications/appinfo/DefaultAppShortcutPreferenceControllerBase.java

@@ -55,9 +55,9 @@ public abstract class DefaultAppShortcutPreferenceControllerBase extends BasePre
     }
 
     @Override
-    public String getSummary() {
+    public CharSequence getSummary() {
         int summaryResId = isDefaultApp() ? R.string.yes : R.string.no;
-        return mContext.getString(summaryResId);
+        return mContext.getText(summaryResId);
     }
 
     @Override