wifi: Fixes for multiple PHY

The main goal of this MR is to fix an issue with multiple PHY interfaces encountered when running the following EMLSR scenario:

A PHY is on an initial band and receives a packet. Then, the PHY switches to another band where it starts receiving another packet. During reception of the PHY header, the PHY switches back to the initial band and starts receiving yet another packet. In this case, first and last packets should be successfully received (no interference), the second packet reception has been interrupted (before the payload reception does start, hence it does not reach the RX state). However, we observed that the last packet was not successfully received, taking into account the very first packet as an interference (which was by long time received by that PHY).