Disconnect on encryption failure

This cl disconnects from the device if encryption fails. This is to avoid staying connected over a plaintext link to a device that cannot be authenticated.

Change-Id: I9a9a977683562562f10b26e270b09036ecce2e7f
Test: atest BumbleBluetoothTests:PairingTest
Test: Manual | Remove bond on the REF device, initiate connection from the DUT, REF must get disconnected immediately
Flag: com.android.bluetooth.flags.disconnect_on_encryption_failure
Ignore-AOSP-First: security
Bug: 368447035
Bug: 378764380