[LoRaWAN] Fix LR-FHSS bw encoding #1558

Job	Run time
rpi-build	1m 38s
esp-build	4m 4s
arduino:avr:mega	10m 20s
rpi-pico-build	1m 16s
arduino:mbed:nano33ble	2m 29s
tock-build	1m 37s
arduino:mbed:envie_m4	2m 23s
arduino:megaavr:uno2018	3m 40s
arduino:sam:arduino_due_x	2m 25s
arduino:samd:arduino_zero_native	2m 12s
adafruit:samd:adafruit_feather_m0	2m 31s
adafruit:nrf52:feather52832	2m 13s
esp32:esp32:esp32	3m 58s
esp8266:esp8266:generic	2m 16s
STMicroelectronics:stm32:GenF3:pnum=BLACKPILL_F303CC	2m 2s
STMicroelectronics:stm32:Nucleo_64:pnum=NUCLEO_WL55JC1	2m 17s
stm32duino:STM32F1:mapleMini	2m 4s
MegaCoreX:megaavr:4809	3m 44s
arduino:mbed_rp2040:pico	3m 9s
rp2040:rp2040:rpipico	3m 47s
CubeCell:CubeCell:CubeCell-Board	2m 7s
MegaCore:avr:1281	2m 7s
teensy:avr:teensy41	3m 49s
arduino:renesas_uno:minima	4m 30s
rpi-test	13s
	1h 12m 51s

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