Bounds-check reply_path in anonymous request handlers #674

Job	Run time
build (LilyGo_Tlora_C6_repeater_)	1m 57s
build (Heltec_v3_repeater)	2m 43s
build (wio-e5-mini_repeater)	1m 30s
build (Heltec_v3_companion_radio_ble)	2m 59s
build (RAK_4631_repeater)	2m 13s
build (Heltec_v3_room_server)	2m 43s
build (RAK_4631_room_server)	2m 32s
build (RAK_4631_companion_radio_ble)	2m 28s
build (PicoW_repeater)	2m 48s
	21m 53s

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