Issues scanning channels 12 & 13

[JosephHewitt]

On ESP-A, when using the latest code in main based on ESP32 board library 3.0.5, channels 12 & 13 are taking around 300ms to scan each (around 3x longer than configured) whereas other channels complete in around 110ms which matches the configured scan time.

I dropped back to 2.0.16 with the same code to see how it performed, and noticed that channel 12 & 13 scans complete in an average of 15ms, indicating it likely didn't scan at all.

Confirmed the behavior on 2 different devices. Verbose logging on both 3.0.5 & 2.0.16 show no issues with the scans.

Configured scanning of channel 14 which also took ~300ms per scan.

When limiting the scanning to only channels 1-11, all scans took the expected amount of time indicating this is a channel-specific issue.