Don't change state when rejecting incoming HID connection

When an undesired incoming connection is rejected, a state change event
is generated. Although HID host state change event contains the
transport, some application may not check that. As a result, the state
change may be attributed to the wrong transport.

Test: mmm packages/modules/Bluetooth
Flag: com.android.bluetooth.flags.suppress_hid_rejection_broadcast
Bug: 339018102
Bug: 339017367
Change-Id: I0e72db68b9842c91fc1fb3609e13c2520f6d082d