### 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
value = p_flag;
	queue_redraw();
}
void EditorPropertyLayersGrid::_bind_methods() {
	ADD_SIGNAL(MethodInfo("flag_changed", PropertyInfo(Variant::INT, "flag")));
	ADD_SIGNAL(MethodInfo("rename_confirmed", PropertyInfo(Variant::INT, "layer_id"), PropertyInfo(Variant::STRING, "new_name")));
}
void EditorPropertyLayers::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_ENTER_TREE:
		case NOTIFICATION_THEME_CHANGED: {
			button->set_texture_normal(get_theme_icon(SNAME("GuiTabMenuHl"), SNAME("EditorIcons")));
			button->set_texture_pressed(get_theme_icon(SNAME("GuiTabMenuHl"), SNAME("EditorIcons")));
			button->set_texture_disabled(get_theme_icon(SNAME("GuiTabMenu"), SNAME("EditorIcons")));
		} break;
	}
}
void EditorPropertyLayers::_set_read_only(bool p_read_only) {
	button->set_disabled(p_read_only);
	grid->set_read_only(p_read_only);
}
void EditorPropertyLayers::_grid_changed(uint32_t p_grid) {
	emit_changed(get_edited_property(), p_grid);
}
void EditorPropertyLayers::update_property() {