### Godot version

v4.0.beta13.official [caacade56]

### System information

Linux Ubuntu 20.04 with Unity desktop

### Issue description

When calling an undefined function in the shader editor with argument(s), such as `undefined_function(1)`, the error reads:

> Too many arguments for "undefined_function()" call. Expected at most 0 but received 1.

instead of the expected:

> No matching function found for: 'undefined_function'.

This is possibly a regression introduced in https://github.com/godotengine/godot/issues/18225, since the latter was focused on the arguments part.

To avoid such regression in the future, consider adding a unit test with this case (and, in fact, unit tests for the other signature errors too if there are not already).

### Steps to reproduce

1. Create a shader resource and open the shader editor
2. Enter `undefined_function(1);` in the fragment() definition

### Minimal reproduction project

N/A
flow->flow_op = FLOW_OP_CONTINUE;
			pos = _get_tkpos();
			tk = _get_token();
			if (tk.type != TK_SEMICOLON) {
				
				_set_expected_after_error(";", "continue");
				return ERR_PARSE_ERROR;
			}
			p_block->statements.push_back(flow);
		} else {
			
			_set_tkpos(pos); 
			Node *expr = _parse_and_reduce_expression(p_block, p_function_info);
			if (!expr) {
				return ERR_PARSE_ERROR;
			}
			is_condition = expr->type == Node::NODE_TYPE_OPERATOR && expr->get_datatype() == TYPE_BOOL;
			if (expr->type == Node::NODE_TYPE_OPERATOR) {
				OperatorNode *op = static_cast<OperatorNode *>(expr);
				if (op->op == OP_EMPTY) {
					is_var_init = true;
					is_condition = true;
				}
			}
			p_block->statements.push_back(expr);
			tk = _get_token();
			if (p_block->block_type == BlockNode::BLOCK_TYPE_FOR_CONDITION) {
				if (tk.type == TK_COMMA) {
					if (!is_condition) {
						_set_error(RTR("The middle expression is expected to be a boolean operator."));