### 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
linked->set_modulate(Color(1, 1, 1, linked->is_pressed() ? 1.0 : 0.5));
	if (spin[0]->get_value() != 0 && spin[1]->get_value() != 0) {
		ratio_yx = spin[1]->get_value() / spin[0]->get_value();
		ratio_zx = spin[2]->get_value() / spin[0]->get_value();
		ratio_xy = spin[0]->get_value() / spin[1]->get_value();
		ratio_zy = spin[2]->get_value() / spin[1]->get_value();
		ratio_xz = spin[0]->get_value() / spin[2]->get_value();
		ratio_yz = spin[1]->get_value() / spin[2]->get_value();
	} else {
		ratio_yx = 1.0;
		ratio_zx = 1.0;
		ratio_xy = 1.0;
		ratio_zy = 1.0;
		ratio_xz = 1.0;
		ratio_yz = 1.0;
	}
}
void EditorPropertyVector3::update_using_vector(Vector3 p_vector) {
	if (angle_in_radians) {
		p_vector.x = Math::rad_to_deg(p_vector.x);
		p_vector.y = Math::rad_to_deg(p_vector.y);
		p_vector.z = Math::rad_to_deg(p_vector.z);
	}
	setting = true;
	spin[0]->set_value(p_vector.x);
	spin[1]->set_value(p_vector.y);
	spin[2]->set_value(p_vector.z);
	setting = false;
}
Vector3 EditorPropertyVector3::get_vector() {