### 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
editor->setup(p_hint);
				return editor;
			}
		} break;
		case Variant::ARRAY: {
			EditorPropertyArray *editor = memnew(EditorPropertyArray);
			editor->setup(Variant::ARRAY, p_hint_text);
			return editor;
		} break;
		case Variant::PACKED_BYTE_ARRAY: {
			EditorPropertyArray *editor = memnew(EditorPropertyArray);
			editor->setup(Variant::PACKED_BYTE_ARRAY);
			return editor;
		} break;
		case Variant::PACKED_INT32_ARRAY: {
			EditorPropertyArray *editor = memnew(EditorPropertyArray);
			editor->setup(Variant::PACKED_INT32_ARRAY);
			return editor;
		} break;
		case Variant::PACKED_INT64_ARRAY: {
			EditorPropertyArray *editor = memnew(EditorPropertyArray);
			editor->setup(Variant::PACKED_INT64_ARRAY);
			return editor;
		} break;
		case Variant::PACKED_FLOAT32_ARRAY: {
			EditorPropertyArray *editor = memnew(EditorPropertyArray);
			editor->setup(Variant::PACKED_FLOAT32_ARRAY);
			return editor;
		} break;
		case Variant::PACKED_FLOAT64_ARRAY: {