Update SX1278.cpp Turn on LnaBoost even in AutoAGC mode #1350

Job	Run time
esp-build	3m 11s
rpi-pico-build	48s
rpi-build	1m 38s
arduino:avr:uno	5m 19s
tock-build	1m 57s
arduino:avr:mega	4s
arduino:mbed:nano33ble	5s
arduino:mbed:envie_m4	4s
arduino:megaavr:uno2018	6s
arduino:sam:arduino_due_x	4s
arduino:samd:arduino_zero_native	4s
adafruit:samd:adafruit_feather_m0	5s
adafruit:nrf52:feather52832	6s
esp32:esp32:esp32	4s
esp8266:esp8266:generic	7s
SparkFun:apollo3:sfe_artemis	4s
STMicroelectronics:stm32:GenF3:pnum=BLACKPILL_F303CC	7s
STMicroelectronics:stm32:Nucleo_64:pnum=NUCLEO_WL55JC1	5s
stm32duino:STM32F1:mapleMini	4s
MegaCoreX:megaavr:4809	5s
arduino:mbed_rp2040:pico	6s
rp2040:rp2040:rpipico	6s
CubeCell:CubeCell:CubeCell-Board	4s
MegaCore:avr:1281	7s
teensy:avr:teensy41	4s
arduino:renesas_uno:minima	6s
rpi-test	11s
	14m 51s

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