AP_TECS: scale velRateMin correctly with airspeed #33146

Job	Run time
build (stm32f7, chibios, 10)	15m 23s
build (stm32h7, chibios, 10)	7m 58s
build (fmuv2-plane, chibios, 10)	4m 1s
build (periph-build, chibios, 10)	10m 39s
build (iofirmware, chibios, 10)	2m 10s
build (CubeOrange-bootloader, chibios, 10)	1m 7s
build (fmuv3-bootloader, chibios, 10)	1m 1s
build (revo-bootloader, chibios, 10)	54s
build (stm32h7-debug, chibios, 10)	4m 29s
build (fmuv3, chibios, 10)	9m 43s
build (revo-mini, chibios, 10)	13m 23s
build (MatekF405-Wing, chibios, 10)	8m 22s
build (CubeOrange-ODID, chibios, 10)	6m 2s
build (CubeRedPrimary-bootloader, chibios, 10)	54s
build (configure-all, chibios, 10)	12m 24s
build (build-options-defaults-test, chibios, 10)	13m 42s
build (signing, chibios, 10)	6m 57s
	1h 59m 9s

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