VisualScript: Adding TOOLS_ENABLED flag where needed (#6144)

Fixes #6022.

modules/visual_script/visual_script_editor.cpp

@@ -6,6 +6,7 @@
 #include "os/input.h"
 #include "os/keyboard.h"
 
+#ifdef TOOLS_ENABLED
 class VisualScriptEditorSignalEdit : public Object {
 
 	OBJ_TYPE(VisualScriptEditorSignalEdit,Object)
@@ -2620,3 +2621,4 @@ void VisualScriptEditor::register_editor() {
 
 }
 
+#endif