#52499 Fix parsing 'preload': increase/decrease parenthesis count

modules/gdscript/gdscript_parser.cpp

@@ -435,7 +435,9 @@ GDScriptParser::Node *GDScriptParser::_parse_expression(Node *p_parent, bool p_s
 			bool valid = false;
 			ConstantNode *cn;
 
+			parenthesis++;
 			Node *subexpr = _parse_and_reduce_expression(p_parent, p_static);
+			parenthesis--;
 			if (subexpr) {
 				if (subexpr->type == Node::TYPE_CONSTANT) {
 					cn = static_cast<ConstantNode *>(subexpr);