### 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
double default_float_step = EDITOR_GET("interface/inspector/default_float_step");
	switch (p_type) {
		
		case Variant::NIL: {
			EditorPropertyNil *editor = memnew(EditorPropertyNil);
			return editor;
		} break;
		case Variant::BOOL: {
			EditorPropertyCheck *editor = memnew(EditorPropertyCheck);
			return editor;
		} break;
		case Variant::INT: {
			if (p_hint == PROPERTY_HINT_ENUM) {
				EditorPropertyEnum *editor = memnew(EditorPropertyEnum);
				Vector<String> options = p_hint_text.split(",");
				editor->setup(options);
				return editor;
			} else if (p_hint == PROPERTY_HINT_FLAGS) {
				EditorPropertyFlags *editor = memnew(EditorPropertyFlags);
				Vector<String> options = p_hint_text.split(",");
				editor->setup(options);
				return editor;
			} else if (p_hint == PROPERTY_HINT_LAYERS_2D_PHYSICS ||
					p_hint == PROPERTY_HINT_LAYERS_2D_RENDER ||
					p_hint == PROPERTY_HINT_LAYERS_2D_NAVIGATION ||
					p_hint == PROPERTY_HINT_LAYERS_3D_PHYSICS ||
					p_hint == PROPERTY_HINT_LAYERS_3D_RENDER ||
					p_hint == PROPERTY_HINT_LAYERS_3D_NAVIGATION) {
				EditorPropertyLayers::LayerType lt = EditorPropertyLayers::LAYER_RENDER_2D;
				switch (p_hint) {