Speed reset when switching flight modes (#21414)

* speed reset between flight modes

* no whitespace

src/modules/navigator/takeoff.cpp

@@ -51,6 +51,9 @@ void
 Takeoff::on_activation()
 {
 	set_takeoff_position();
+
+	// reset cruising speed to default
+	_navigator->reset_cruising_speed();
 }
 
 void