commander: Add prearm check for flight termination

src/modules/commander/Commander.cpp

@@ -2911,6 +2911,8 @@ Commander::run()
 			checkWindAndWarn();
 		}
 
+		_status_flags.flight_terminated = _armed.force_failsafe || _armed.lockdown || _armed.manual_lockdown;
+
 		/* Get current timestamp */
 		const hrt_abstime now = hrt_absolute_time();