### Godot version

4.0.beta13 (caacade56)

### System information

Windows 10

### Issue description

Seems like this was missed in #62011 and #70540. `@export_multiline` should also support the PackedStringArray datatype on top of Array[String] and Dictionary, but it doesn't, instead giving the error `"@export_multiline" annotation requires a variable of type "String" but type "PackedStringArray" was given instead.`

### Steps to reproduce

Create a PackedStringArray with the `@export_multiline` annotation.
```gdscript
@export_multiline var npc_dialog: PackedStringArray
```

### Minimal reproduction project

N/A
Vector3 v3;
	v3.x = spin[0]->get_value();
	v3.y = spin[1]->get_value();
	v3.z = spin[2]->get_value();
	if (angle_in_radians) {
		v3.x = Math::deg_to_rad(v3.x);
		v3.y = Math::deg_to_rad(v3.y);
		v3.z = Math::deg_to_rad(v3.z);
	}
	return v3;
}
void EditorPropertyVector3::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_ENTER_TREE:
		case NOTIFICATION_THEME_CHANGED: {
			linked->set_texture_normal(get_theme_icon(SNAME("Unlinked"), SNAME("EditorIcons")));
			linked->set_texture_pressed(get_theme_icon(SNAME("Instance"), SNAME("EditorIcons")));
			const Color *colors = _get_property_colors();
			for (int i = 0; i < 3; i++) {
				spin[i]->add_theme_color_override("label_color", colors[i]);
			}
		} break;
	}
}
void EditorPropertyVector3::_bind_methods() {