Settings: Change an assert in test

Avoid isEqualsTo for a self-equality test.

Bug: 73797873
Test: m javac-check RUN_ERROR_PRONE=true
Test: m RunSettingsRoboTests
Change-Id: I6f0398b4518d6c967c8cfea38b5c075304b5f368

tests/robotests/src/com/android/settings/applications/manageapplications/AppFilterItemTest.java

@@ -47,7 +47,8 @@ public class AppFilterItemTest {
                 R.string.filter_all_apps);
 
         // Same instance, should be same
-        assertThat(item).isEqualTo(item);
+        // (Use isTrue as isEqualsTo will prioritize reference equality!)
+        assertThat(item.equals(item)).isTrue();
 
         // Same content, should be same
         assertThat(item).isEqualTo(item2);