Fix fail of AutomaticStorageManagerSwitchBarControllerTest

initializingSwitchDoesNotTriggerView initializes mController
with a mSwitchBar which has already addOnSwitchChangeListener,
it will trigger onSwitchChangedon (and a dialog breaks the test)
of a mController initialized at setUp().

This change initializes a new mSwitchBar for the test.

Bug: 214907475
Test: make RunSettingsRoboTests ROBOTEST_FILTER=AutomaticStorageManagerSwitchBarControllerTest
Change-Id: Iefe56387c56ca6b1c2520c050467d130182ccfdc

tests/robotests/src/com/android/settings/deletionhelper/AutomaticStorageManagerSwitchBarControllerTest.java

@@ -38,7 +38,6 @@ import com.android.settings.widget.SettingsMainSwitchBar;
 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
 
 import org.junit.Before;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Answers;
@@ -138,13 +137,13 @@ public class AutomaticStorageManagerSwitchBarControllerTest {
     }
 
     @Test
-    @Ignore
     public void initializingSwitchDoesNotTriggerView() {
         Settings.Secure.putInt(
                 mContext.getContentResolver(),
                 Settings.Secure.AUTOMATIC_STORAGE_MANAGER_ENABLED,
                 1);
 
+        mSwitchBar = new SettingsMainSwitchBar(mContext);
         mController =
                 new AutomaticStorageManagerSwitchBarController(
                         mContext,