### 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
EditorPropertyRangeHint hint;
	hint.step = p_default_step;
	Vector<String> slices = p_hint_text.split(",");
	if (p_hint == PROPERTY_HINT_RANGE) {
		ERR_FAIL_COND_V_MSG(slices.size() < 2, hint,
				vformat("Invalid PROPERTY_HINT_RANGE with hint \"%s\": Missing required min and/or max values.", p_hint_text));
		hint.or_greater = false; 
		hint.or_less = false;
		hint.min = slices[0].to_float();
		hint.max = slices[1].to_float();
		if (slices.size() >= 3 && slices[2].is_valid_float()) {
			
			hint.step = slices[2].to_float();
		}
		hint.hide_slider = false;
		for (int i = 2; i < slices.size(); i++) {
			String slice = slices[i].strip_edges();