AP_Scripting: fixed pitch param reversion in revert_param.lua #35848

Job	Run time
build (stm32f7, chibios, 10)	3m 59s
build (stm32h7, chibios, 10)	3m 38s
build (fmuv2-plane, chibios, 10)	2m 3s
build (periph-build, chibios, 10)	3m 54s
build (iofirmware, chibios, 10)	1m 19s
build (CubeOrange-bootloader, chibios, 10)	1m 14s
build (fmuv3-bootloader, chibios, 10)	1m 4s
build (revo-bootloader, chibios, 10)	1m 6s
build (stm32h7-debug, chibios, 10)	2m 2s
build (fmuv3, chibios, 10)	5m 5s
build (revo-mini, chibios, 10)	3m 53s
build (MatekF405-Wing, chibios, 10)	4m 34s
build (CubeOrange-ODID, chibios, 10)	2m 31s
build (CubeRedPrimary-bootloader, chibios, 10)	1m 15s
build (configure-all, chibios, 10)	9m 11s
build (build-options-defaults-test, chibios, 10)	6m 2s
build (signing, chibios, 10)	2m 36s
build (CubeOrange-PPP, chibios, 10)	2m 1s
build (CubeOrange-SOHW, chibios, 10)	1m 56s
build (Pixhawk6X-PPPGW, chibios, 10)	1m 32s
	1h 0m 55s

Provide feedback