Fix talkback speak "double tap to activate" on LabeledSeekBarPreference

- SeekBarPreference should be unselectable
- remove unnecessary handling of Summary
- set currect Title color when preference is enabled and unselectable

Bug: 230553896
Test: robotest
Change-Id: Ie5d819088dc3c435005ddd00e232b2f6992b234a

src/com/android/settings/widget/SeekBarPreference.java

@@ -78,12 +78,7 @@ public class SeekBarPreference extends RestrictedPreference
                 com.android.internal.R.layout.preference_widget_seekbar);
         a.recycle();
 
-        a = context.obtainStyledAttributes(
-                attrs, com.android.internal.R.styleable.Preference, defStyleAttr, defStyleRes);
-        final boolean isSelectable = a.getBoolean(
-                com.android.settings.R.styleable.Preference_android_selectable, false);
-        setSelectable(isSelectable);
-        a.recycle();
+        setSelectable(false);
 
         setLayoutResource(layoutResId);
     }
@@ -170,11 +165,6 @@ public class SeekBarPreference extends RestrictedPreference
         });
     }
 
-    @Override
-    public CharSequence getSummary() {
-        return null;
-    }
-
     @Override
     protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
         setProgress(restoreValue ? getPersistedInt(mProgress)