AP_HAL_SITL: initialize rcout safety state #37941

Job	Run time
build (base)	4m 11s
build (base)	4m 11s
build (base)	4m 11s
build (base)	4m 11s
build (base)	4m 11s
build (clang)	4m 6s
build (clang)	4m 6s
build (clang)	4m 6s
build (clang)	4m 6s
build (clang)	4m 6s
autotest (sitltest-rover)	14m 6s
autotest (sitltest-rover)	13m 36s
autotest (sitltest-rover)	10m 16s
autotest (sitltest-rover)	12m 53s
autotest (sitltest-rover)	12m 35s
autotest (sitltest-sailboat)	6m 59s
autotest (sitltest-sailboat)	6m 59s
autotest (sitltest-sailboat)	6m 59s
autotest (sitltest-sailboat)	6m 59s
autotest (sitltest-sailboat)	6m 59s
autotest (sitltest-balancebot)	8m 19s
autotest (sitltest-balancebot)	8m 19s
autotest (sitltest-balancebot)	8m 19s
autotest (sitltest-balancebot)	8m 19s
autotest (sitltest-balancebot)	8m 19s
	3h 1m 21s

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