Lua: Hide REPL by default

Change-Id: Ieeac4bd49cd39dc16cf9637b1a487faf024bf44a
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/lua/luaplugin.cpp

@@ -171,7 +171,7 @@ public:
     {
         setId("LuaPane");
         setDisplayName(Tr::tr("Lua"));
-        setPriorityInStatusBar(20);
+        setPriorityInStatusBar(-20);
     }
 
     QWidget *outputWidget(QWidget *parent) override