Validate decrypted PATH path_len against MAX_PATH_SIZE #74

Job	Run time
build (RAK_4631_room_server)	2m 12s
build (Heltec_v3_repeater)	2m 51s
build (RAK_4631_companion_radio_ble)	2m 4s
build (wio-e5-mini_repeater)	2m 2s
build (RAK_4631_repeater)	2m 5s
build (Heltec_v3_companion_radio_ble)	2m 35s
build (PicoW_repeater)	2m 22s
build (Heltec_v3_room_server)	2m 52s
build (LilyGo_Tlora_C6_repeater_)	1m 43s
	20m 46s

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