Direction Finding - CTE transmitted in connectionless mode has wrong length

[ppryga-nordic]

Describe the bug
Reception of CTE by use of BT sniffer has shown that the CTE length is wrong. It is different (shorther) than value provided by CTEInfo field of periodic advertising PDU.

To Reproduce
TX - use sample direction_finding_connectionless_tx.
RX - use BT sniffer that is compliant with BT 5.1 core specification.

Expected behavior
Length of CTE attached to periodic advertising PDU has to be equal to the length declared in CTEInfo field.

Impact
Transmission of CTE (direction finding TX) in connectionless mode will not provide valid IQ samples to make angles evaluation.

Logs and console output

Environment (please complete the following information):

• current main e.g. commit: e6000e6

Additional context
Add any other context about the problem here.

[ppryga-nordic]

Issue fixes: #36958