AP_TECS: inhibit raising TAS_dem during flare #39117

Job	Run time
build (stm32f7, chibios, 10)	4m 11s
build (stm32h7, chibios, 10)	3m 42s
build (fmuv2-plane, chibios, 10)	2m 6s
build (periph-build, chibios, 10)	3m 54s
build (iofirmware, chibios, 10)	1m 45s
build (CubeOrange-bootloader, chibios, 10)	1m 0s
build (fmuv3-bootloader, chibios, 10)	1m 5s
build (revo-bootloader, chibios, 10)	50s
build (stm32h7-debug, chibios, 10)	2m 31s
build (fmuv3, chibios, 10)	5m 9s
build (revo-mini, chibios, 10)	4m 5s
build (MatekF405-Wing, chibios, 10)	4m 41s
build (CubeOrange-ODID, chibios, 10)	2m 40s
build (CubeRedPrimary-bootloader, chibios, 10)	1m 0s
build (configure-all, chibios, 10)	10m 9s
build (build-options-defaults-test, chibios, 10)	7m 37s
build (signing, chibios, 10)	3m 8s
build (CubeOrange-PPP, chibios, 10)	2m 9s
build (SOHW, chibios, 10)	3m 30s
build (Pixhawk6X-PPPGW, chibios, 10)	1m 32s
build (new-check, chibios, 10)	4m 39s
	1h 11m 23s

Provide feedback