### 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
#include "editor_properties.h"
#include "core/config/project_settings.h"
#include "core/core_string_names.h"
#include "editor/create_dialog.h"
#include "editor/editor_file_dialog.h"
#include "editor/editor_node.h"
#include "editor/editor_properties_array_dict.h"
#include "editor/editor_resource_picker.h"
#include "editor/editor_scale.h"
#include "editor/editor_settings.h"
#include "editor/inspector_dock.h"
#include "editor/plugins/script_editor_plugin.h"
#include "editor/project_settings_editor.h"
#include "editor/property_selector.h"
#include "editor/scene_tree_editor.h"
#include "scene/2d/gpu_particles_2d.h"
#include "scene/3d/fog_volume.h"
#include "scene/3d/gpu_particles_3d.h"
#include "scene/gui/color_picker.h"
#include "scene/main/window.h"
#include "scene/resources/font.h"
#include "scene/resources/mesh.h"
#include "scene/resources/packed_scene.h"
void EditorPropertyNil::update_property() {