### 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
calltip += " ";
						}
						if (j == completion_argument) {
							calltip += char32_t(0xFFFF);
						}
						if (shader->functions[i].function->arguments[j].is_const) {
							calltip += "const ";
						}
						if (shader->functions[i].function->arguments[j].qualifier != ArgumentQualifier::ARGUMENT_QUALIFIER_IN) {
							if (shader->functions[i].function->arguments[j].qualifier == ArgumentQualifier::ARGUMENT_QUALIFIER_OUT) {
								calltip += "out ";
							} else { 
								calltip += "inout ";
							}
						}
						calltip += get_datatype_name(shader->functions[i].function->arguments[j].type);
						calltip += " ";
						calltip += shader->functions[i].function->arguments[j].name;
						if (shader->functions[i].function->arguments[j].array_size > 0) {
							calltip += "[";
							calltip += itos(shader->functions[i].function->arguments[j].array_size);
							calltip += "]";
						}
						if (j == completion_argument) {
							calltip += char32_t(0xFFFF);
						}
					}
					if (shader->functions[i].function->arguments.size()) {
						calltip += " ";
					}