Create a new string for keyboard disconnected state

Change-Id: I454bbb3b8e0ee22c0f7a5a340b86dfd5607de86e
Fixes: 77957016
Test: robotests

tests/robotests/src/com/android/settings/inputmethod/PhysicalKeyboardPreferenceControllerTest.java

@@ -24,7 +24,6 @@ import static org.mockito.Mockito.when;
 
 import android.content.Context;
 import android.hardware.input.InputManager;
-import androidx.preference.Preference;
 import android.view.InputDevice;
 
 import com.android.settings.R;
@@ -40,6 +39,8 @@ import org.mockito.MockitoAnnotations;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
 
+import androidx.preference.Preference;
+
 @RunWith(SettingsRobolectricTestRunner.class)
 public class PhysicalKeyboardPreferenceControllerTest {
 
@@ -87,7 +88,7 @@ public class PhysicalKeyboardPreferenceControllerTest {
         ShadowInputDevice.sDeviceIds = new int[0];
         mController.updateState(mPreference);
 
-        verify(mPreference).setSummary(R.string.disconnected);
+        verify(mPreference).setSummary(R.string.keyboard_disconnected);
     }
 
     @Test