### 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
if (p_need_indent) {
		if (!consume(GDScriptTokenizer::Token::INDENT, R"(Expected indented block for property after ":".)")) {
			complete_extents(p_variable);
			return nullptr;
		}
	}
	VariableNode *property = p_variable;
	make_completion_context(COMPLETION_PROPERTY_DECLARATION, property);
	if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected "get" or "set" for property declaration.)")) {
		complete_extents(p_variable);
		return nullptr;
	}
	IdentifierNode *function = parse_identifier();
	if (check(GDScriptTokenizer::Token::EQUAL)) {
		p_variable->property = VariableNode::PROP_SETGET;
	} else {
		p_variable->property = VariableNode::PROP_INLINE;
		if (!p_need_indent) {
			push_error("Property with inline code must go to an indented block.");
		}
	}
	bool getter_used = false;
	bool setter_used = false;