### 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
for (int i = 0; i < shader->functions.size(); i++) {
		if (shader->functions[i].name == p_name) {
			ERR_FAIL_INDEX_V(p_argument, shader->functions[i].function->arguments.size(), false);
			FunctionNode::Argument *arg = &shader->functions[i].function->arguments.write[p_argument];
			if (arg->tex_builtin_check) {
				_set_error(vformat(RTR("Sampler argument %d of function '%s' called more than once using both built-ins and uniform textures, this is not supported (use either one or the other)."), p_argument, String(p_name)));
				return false;
			} else if (arg->tex_argument_check) {
				
				if (arg->tex_argument_filter == p_filter && arg->tex_argument_repeat == p_repeat) {
					return true;
				} else {
					_set_error(vformat(RTR("Sampler argument %d of function '%s' called more than once using textures that differ in either filter or repeat setting."), p_argument, String(p_name)));
					return false;
				}
			} else {
				arg->tex_argument_check = true;
				arg->tex_argument_filter = p_filter;
				arg->tex_argument_repeat = p_repeat;
				for (KeyValue<StringName, HashSet<int>> &E : arg->tex_argument_connect) {