### 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
assignment->operation = AssignmentNode::OP_DIVISION;
			assignment->variant_op = Variant::OP_DIVIDE;
			break;
		case GDScriptTokenizer::Token::PERCENT_EQUAL:
			assignment->operation = AssignmentNode::OP_MODULO;
			assignment->variant_op = Variant::OP_MODULE;
			break;
		case GDScriptTokenizer::Token::LESS_LESS_EQUAL:
			assignment->operation = AssignmentNode::OP_BIT_SHIFT_LEFT;
			assignment->variant_op = Variant::OP_SHIFT_LEFT;
			break;
		case GDScriptTokenizer::Token::GREATER_GREATER_EQUAL:
			assignment->operation = AssignmentNode::OP_BIT_SHIFT_RIGHT;
			assignment->variant_op = Variant::OP_SHIFT_RIGHT;
			break;
		case GDScriptTokenizer::Token::AMPERSAND_EQUAL:
			assignment->operation = AssignmentNode::OP_BIT_AND;
			assignment->variant_op = Variant::OP_BIT_AND;
			break;
		case GDScriptTokenizer::Token::PIPE_EQUAL:
			assignment->operation = AssignmentNode::OP_BIT_OR;
			assignment->variant_op = Variant::OP_BIT_OR;
			break;
		case GDScriptTokenizer::Token::CARET_EQUAL:
			assignment->operation = AssignmentNode::OP_BIT_XOR;
			assignment->variant_op = Variant::OP_BIT_XOR;
			break;
		default:
			break; 
	}