Fix the bug of "Connecting" is rarely appearing on Wi-Fi slice

- AccessPoint treats connected and connecting as equal so slice doesn't
refresh in this case
- Add a new method to determine if two lists are the same in SliceBackgroundWorker
- WifiScanWorker overrides this method to check the access point states

Fixes: 123941320
Test: robotest
Change-Id: I78d610da4b6b1d40f5785ba6701fb71b987fe31c

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

@@ -146,7 +146,7 @@ public abstract class SliceBackgroundWorker<E> implements Closeable {
                 needNotify = true;
             }
         } else {
-            needNotify = !results.equals(mCachedResults);
+            needNotify = !areListsTheSame(results, mCachedResults);
         }
 
         if (needNotify) {
@@ -155,6 +155,10 @@ public abstract class SliceBackgroundWorker<E> implements Closeable {
         }
     }
 
+    protected boolean areListsTheSame(List<E> a, List<E> b) {
+        return a.equals(b);
+    }
+
     /**
      * Notify that data was updated and attempt to sync changes to the Slice.
      */