fix: Ensure GDScript singleton class accessors/modifiers are static.

Fixes #99

Author: Benjamin-Dobell

.changeset/small-emus-notice.md

@@ -0,0 +1,7 @@
+---
+"@godot-js/editor": patch
+---
+
+**Fix/Types:** Ensure GDScript singleton class accessors/modifiers are `static`.
+
+Fixes https://github.com/godotjs/GodotJS/issues/99

scripts/jsb.editor/src/jsb.editor.codegen.ts

@@ -3438,7 +3438,7 @@ export class TSDCodeGen {
             }
 
             for (let property_info of cls.properties) {
-                class_cg.property_(property_info);
+                class_cg.property_(property_info, singleton_mode);
                 if (property_info.internal_name !== property_info.name) {
                     godot_name_overrides[property_info.internal_name] = property_info.name;
                 }