[LE unicast] Using the pairDeviceByCsip API

ag/20176285 changes the API flow.

Bug: 253541065
Test: make RunSettingsLibRoboTests ROBOTEST_FILTER=CachedBluetoothDeviceManagerTest
local test and result is on bug (pass)

Change-Id: I2354b464a93b3122b462dc9cc20556f621490d2a
diff --git a/src/com/android/settings/bluetooth/BluetoothPairingRequest.java b/src/com/android/settings/bluetooth/BluetoothPairingRequest.java
index d5de41a..ed7a1fc 100644
--- a/src/com/android/settings/bluetooth/BluetoothPairingRequest.java
+++ b/src/com/android/settings/bluetooth/BluetoothPairingRequest.java
@@ -87,9 +87,7 @@
                 return;
             }
 
-            if (mBluetoothManager.getCachedDeviceManager().shouldPairByCsip(device, groupId)) {
-                device.createBond(BluetoothDevice.TRANSPORT_LE);
-            }
+            mBluetoothManager.getCachedDeviceManager().pairDeviceByCsip(device, groupId);
         }
     }
 }