[Accessibility] Hide Color Contrast entry point in Accessibility

Test: local raven device
Bug: 241805782

Change-Id: I9f0825df68a0c2bdb90ba068b0e4b133cbc8ae57

src/com/android/settings/accessibility/ContrastPreferenceController.java

@@ -33,6 +33,7 @@ public class ContrastPreferenceController extends BasePreferenceController {
 
     @Override
     public int getAvailabilityStatus() {
-        return Flags.enableColorContrastControl() ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+        // Hide color contrast entry point inside Accessibility settings.
+        return CONDITIONALLY_UNAVAILABLE;
     }
 }