Add pair button in bluetooth details page for hearing aid device

Root Cause: Users can not connect another ear again after they cancel
the pairing dialog in Accessibility -> hearing aids entry

Solution: Add pair button in bluetooth details page for hearing aid
device

Bug: 233038449
Test: make RunSettingsRoboTests
ROBOTEST_FILTER=BluetoothDetailsPairOtherControllerTest

Change-Id: I6a7af1c2c2263476b040233edb072cc64a2927b0

src/com/android/settings/bluetooth/BluetoothDeviceDetailsFragment.java

@@ -268,6 +268,8 @@ public class BluetoothDeviceDetailsFragment extends RestrictedDashboardFragment
                     lifecycle));
             controllers.add(new BluetoothDetailsRelatedToolsController(context, this, mCachedDevice,
                     lifecycle));
+            controllers.add(new BluetoothDetailsPairOtherController(context, this, mCachedDevice,
+                    lifecycle));
         }
         return controllers;
     }