### 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
} else {
					return _make_token(TK_ERROR, "Invalid include enter/exit hint token (@@> and @@<)");
				}
			} break;
			default: {
				char_idx--; 
				if (is_digit(GETCHAR(0)) || (GETCHAR(0) == '.' && is_digit(GETCHAR(1)))) {
					
					bool hexa_found = false;
					bool period_found = false;
					bool exponent_found = false;
					bool float_suffix_found = false;
					bool uint_suffix_found = false;
					bool end_suffix_found = false;
					enum {
						CASE_ALL,
						CASE_HEXA_PERIOD,
						CASE_EXPONENT,
						CASE_SIGN_AFTER_EXPONENT,
						CASE_NONE,
						CASE_MAX,
					} lut_case = CASE_ALL;
					static bool suffix_lut[CASE_MAX][127];
					if (!is_const_suffix_lut_initialized) {
						is_const_suffix_lut_initialized = true;
						for (int i = 0; i < 127; i++) {
							char t = char(i);
							suffix_lut[CASE_ALL][i] = t == '.' || t == 'x' || t == 'e' || t == 'f' || t == 'u' || t == '-' || t == '+';
							suffix_lut[CASE_HEXA_PERIOD][i] = t == 'e' || t == 'f' || t == 'u';
							suffix_lut[CASE_EXPONENT][i] = t == 'f' || t == '-' || t == '+';