Notify the accepting state to HidHost on BT power cycle

On BT power cycle, hid native stack notify the HID connection state as
`BTHH_CONN_STATE_ACCEPTING` to add device to known HID device list

Test: mmm packages/modules/Bluetooth
Test: Manual | Pair and connect a HID device, disable input, enable the
flag, restart BT, initiate connection from the HID device
Bug: 331728251
Bug: 320762367

Change-Id: I3e0d6c6f8e18fa8cee26d5835f651217ba1f5d41