[SX126x] Make Tx timeout at least 5 ms (#1338) #1599

Job	Run time
rpi-build	1m 38s
rpi-pico-build	44s
arduino:avr:mega	8m 30s
esp-build	4m 27s
arduino:mbed:nano33ble	3m 21s
tock-build	1m 24s
arduino:mbed:envie_m4	2m 11s
arduino:megaavr:uno2018	3m 1s
arduino:sam:arduino_due_x	2m 9s
arduino:samd:arduino_zero_native	2m 7s
adafruit:samd:adafruit_feather_m0	2m 7s
adafruit:nrf52:feather52832	2m 13s
esp32:esp32:esp32	2m 10s
esp8266:esp8266:generic	2m 0s
STMicroelectronics:stm32:GenF3:pnum=BLACKPILL_F303CC	2m 8s
STMicroelectronics:stm32:Nucleo_64:pnum=NUCLEO_WL55JC1	3m 28s
stm32duino:STM32F1:mapleMini	4m 0s
MegaCoreX:megaavr:4809	4m 2s
arduino:mbed_rp2040:pico	2m 15s
rp2040:rp2040:rpipico	2m 3s
CubeCell:CubeCell:CubeCell-Board	2m 13s
MegaCore:avr:1281	4m 28s
teensy:avr:teensy41	4m 29s
arduino:renesas_uno:minima	4m 17s
rpi-test	11s
	1h 11m 36s

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