### 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
[[fallthrough]];
			case TK_INSTANCE: {
				if (tk.type == TK_INSTANCE) {
#ifdef DEBUG_ENABLED
					keyword_completion_context = CF_UNIFORM_KEYWORD;
					if (_lookup_next(next)) {
						if (next.type == TK_UNIFORM) {
							keyword_completion_context ^= CF_UNIFORM_KEYWORD;
						}
					}
#endif 
					if (String(shader_type_identifier) != "spatial") {
						_set_error(vformat(RTR("Uniform instances are not yet implemented for '%s' shaders."), shader_type_identifier));
						return ERR_PARSE_ERROR;
					}
					if (OS::get_singleton()->get_current_rendering_method() == "gl_compatibility") {
						_set_error(RTR("Uniform instances are not supported in gl_compatibility shaders."));
						return ERR_PARSE_ERROR;
					}
					if (uniform_scope == ShaderNode::Uniform::SCOPE_LOCAL) {
						tk = _get_token();
						if (tk.type != TK_UNIFORM) {
							_set_expected_after_error("uniform", "instance");
							return ERR_PARSE_ERROR;
						}
						uniform_scope = ShaderNode::Uniform::SCOPE_INSTANCE;
					}
				}
			};
				[[fallthrough]];