### Godot version

9f12e7b52d944

### System information

arch linux

### Issue description

Attempting to edit from the editor a typed array exported from a tool script fails, any value is immediately reset, setters are never called.

### Steps to reproduce

Create a script such as follows and try to add and then change items of the array in the inspector.


```gdscript
@tool
extends Node

@export var x: Array[String]
```

### Minimal reproduction project

n/a
} else if (slice == "hide_slider") {
				hint.hide_slider = true;
			} else if (slice == "exp") {
				hint.exp_range = true;
			}
		}
	}
	bool degrees = false;
	for (int i = 0; i < slices.size(); i++) {
		String slice = slices[i].strip_edges();
		if (slice == "radians") {
			hint.radians = true;
		} else if (slice == "degrees") {
			degrees = true;
		} else if (slice.begins_with("suffix:")) {
			hint.suffix = " " + slice.replace_first("suffix:", "").strip_edges();
		}
	}
	if ((hint.radians || degrees) && hint.suffix.is_empty()) {
		hint.suffix = U"\u00B0";
	}
	ERR_FAIL_COND_V_MSG(hint.step == 0, hint,
			vformat("Invalid PROPERTY_HINT_RANGE with hint \"%s\": Step cannot be 0.", p_hint_text));
	return hint;
}
EditorProperty *EditorInspectorDefaultPlugin::get_editor_for_property(Object *p_object, const Variant::Type p_type, const String &p_path, const PropertyHint p_hint, const String &p_hint_text, const BitField<PropertyUsageFlags> p_usage, const bool p_wide) {
	double default_float_step = EDITOR_GET("interface/inspector/default_float_step");
	switch (p_type) {
		
		case Variant::NIL: {