Missing response parameter for HCI_LE_Set_Connectionless_IQ_Sampling_Enable HCI command

[ppryga-nordic]

Describe the bug
Response HCI_Command_Complete event generated by BLE controller on HCI_LE_Set_Connectionless_IQ_Sampling_Enable command has missing return parameter: sync_handle

To Reproduce
Two nRF52833 DKs are required.
First one must run direction_finding_connectionless_tx sample.
Second one must run direction_finding_connectionless_rx sample.

Error may not be observed when BLE controller runs with Zephyrs host.
It may be observer if controller is working with host that expect correct sync_handle return parameter.
In such situation every call to enable CTE receive and sampling in controller should fail due to:

• expected different length of response event,
• wrong sync_handle parameter value.

Expected behavior
Controller should include sync_handle parameter in returned HCI_Command_Complete event.
Host implementation should fail with -EIO if the sync_handle parameter is invalid.

Impact
It may impact all BLE host implementations that expect and verify correct return parameters in HCI_Command_Complete for HCI_LE_Set_Connectionless_IQ_Sampling_Enable.
It does not affect Zephyrs host implementation because the parameter was not verified there.

Logs and console output

Environment (please complete the following information):

• Current main branch: e.g commit: 94e8c2e.

Additional context