### 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
}
	warning = memnew(Button);
	warning->set_text(TTR("Temporary Euler may be changed implicitly!"));
	warning->set_clip_text(true);
	warning->connect("pressed", callable_mp(this, &EditorPropertyQuaternion::_warning_pressed));
	warning_dialog = memnew(AcceptDialog);
	add_child(warning_dialog);
	warning_dialog->set_text(TTR("Temporary Euler will not be stored in the object with the original value. Instead, it will be stored as Quaternion with irreversible conversion.\nThis is due to the fact that the result of Euler->Quaternion can be determined uniquely, but the result of Quaternion->Euler can be multi-existent."));
	euler_label = memnew(Label);
	euler_label->set_text("Temporary Euler");
	edit_custom_bc->add_child(warning);
	edit_custom_bc->add_child(edit_custom_layout);
	edit_custom_layout->add_child(euler_label);
	for (int i = 0; i < 3; i++) {
		euler[i] = memnew(EditorSpinSlider);
		euler[i]->set_flat(true);
		euler[i]->set_label(desc[i]);
		edit_custom_layout->add_child(euler[i]);
		add_focusable(euler[i]);
		euler[i]->connect("value_changed", callable_mp(this, &EditorPropertyQuaternion::_custom_value_changed));
		if (horizontal) {
			euler[i]->set_h_size_flags(SIZE_EXPAND_FILL);
		}
	}
	edit_button = memnew(Button);
	edit_button->set_flat(true);
	edit_button->set_toggle_mode(true);
	default_layout->add_child(edit_button);
	edit_button->connect("pressed", callable_mp(this, &EditorPropertyQuaternion::_edit_custom_value));
	add_focusable(edit_button);