AP_TECS: scale velRateMin correctly with airspeed #34661

Job	Run time
build (stm32f7, chibios, 10)	4m 34s
build (stm32h7, chibios, 10)	3m 19s
build (fmuv2-plane, chibios, 10)	2m 14s
build (periph-build, chibios, 10)	5m 14s
build (iofirmware, chibios, 10)	1m 29s
build (CubeOrange-bootloader, chibios, 10)	50s
build (fmuv3-bootloader, chibios, 10)	54s
build (revo-bootloader, chibios, 10)	1m 6s
build (stm32h7-debug, chibios, 10)	2m 5s
build (fmuv3, chibios, 10)	5m 21s
build (revo-mini, chibios, 10)	4m 40s
build (MatekF405-Wing, chibios, 10)	5m 12s
build (CubeOrange-ODID, chibios, 10)	2m 55s
build (CubeRedPrimary-bootloader, chibios, 10)	1m 7s
build (configure-all, chibios, 10)	8m 45s
build (build-options-defaults-test, chibios, 10)	7m 46s
build (signing, chibios, 10)	2m 59s
build (CubeOrange-PPP, chibios, 10)	2m 1s
build (CubeOrange-SOHW, chibios, 10)	2m 50s
	1h 5m 21s

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