### 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
spin->hide();
	
	dragging = false;
	easing_draw->queue_redraw();
}
void EditorPropertyEasing::setup(bool p_positive_only, bool p_flip) {
	flip = p_flip;
	positive_only = p_positive_only;
}
void EditorPropertyEasing::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_THEME_CHANGED:
		case NOTIFICATION_ENTER_TREE: {
			preset->clear();
			preset->add_icon_item(get_theme_icon(SNAME("CurveLinear"), SNAME("EditorIcons")), "Linear", EASING_LINEAR);
			preset->add_icon_item(get_theme_icon(SNAME("CurveIn"), SNAME("EditorIcons")), "Ease In", EASING_IN);
			preset->add_icon_item(get_theme_icon(SNAME("CurveOut"), SNAME("EditorIcons")), "Ease Out", EASING_OUT);
			preset->add_icon_item(get_theme_icon(SNAME("CurveConstant"), SNAME("EditorIcons")), "Zero", EASING_ZERO);
			if (!positive_only) {
				preset->add_icon_item(get_theme_icon(SNAME("CurveInOut"), SNAME("EditorIcons")), "Ease In-Out", EASING_IN_OUT);
				preset->add_icon_item(get_theme_icon(SNAME("CurveOutIn"), SNAME("EditorIcons")), "Ease Out-In", EASING_OUT_IN);
			}
			easing_draw->set_custom_minimum_size(Size2(0, get_theme_font(SNAME("font"), SNAME("Label"))->get_height(get_theme_font_size(SNAME("font_size"), SNAME("Label"))) * 2));
		} break;
	}
}
void EditorPropertyEasing::_bind_methods() {