Convert xml based API allowDynamicSummaryInSlice to java

- Add boolean useDynamicSliceSummary() in Sliceable interface. This is
  the switch equivalent to android:allowDynamicSummaryInSlice in xml. It
  moves the setter closer to regular Sliceable APIs, thus less easily to
  miss.
- Coverted all android:allowDynamicSummaryInSlice to use the java API.
  - Except 2 prefs in my_device_info. They incorrectly set this to true
  previously (controller is not sliceable, no point setting
  dynamicSliceSummary to true. They just won't do anything)

Fixes: 128446156
Test: robolectric
Change-Id: Ic57acd590dec3e87dcf4592df137321d14b854d9

src/com/android/settings/slices/SliceBuilderUtils.java

@@ -188,8 +188,8 @@ public class SliceBuilderUtils {
      * @return the summary text for a {@link Slice} built for {@param sliceData}.
      */
     public static CharSequence getSubtitleText(Context context,
-            AbstractPreferenceController controller, SliceData sliceData) {
-        final boolean isDynamicSummaryAllowed = sliceData.isDynamicSummaryAllowed();
+            BasePreferenceController controller, SliceData sliceData) {
+        final boolean isDynamicSummaryAllowed = controller.useDynamicSliceSummary();
         CharSequence summaryText = controller.getSummary();
 
         // Priority 1 : User prefers showing the dynamic summary in slice view rather than static