### 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
expr = constant;
		} else if (tk.type == TK_TYPE_VOID) {
			
			_set_error(RTR("Void value not allowed in expression."));
			return nullptr;
		} else if (is_token_nonvoid_datatype(tk.type) || tk.type == TK_CURLY_BRACKET_OPEN) {
			if (tk.type == TK_CURLY_BRACKET_OPEN) {
				
				_set_tkpos(prepos);
				expr = _parse_array_constructor(p_block, p_function_info);
			} else {
				DataType datatype;
				DataPrecision precision = PRECISION_DEFAULT;
				if (is_token_precision(tk.type)) {
					precision = get_token_precision(tk.type);
					tk = _get_token();
				}
				datatype = get_token_datatype(tk.type);
				if (precision != PRECISION_DEFAULT && _validate_precision(datatype, precision) != OK) {
					return nullptr;
				}
				tk = _get_token();
				if (tk.type == TK_BRACKET_OPEN) {
					
					_set_tkpos(prepos);
					expr = _parse_array_constructor(p_block, p_function_info);
				} else {
					if (tk.type != TK_PARENTHESIS_OPEN) {
						_set_error(RTR("Expected '(' after the type name."));
						return nullptr;