### 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
if (tk.type != TK_CURLY_BRACKET_OPEN) {
				_set_expected_after_error("{", "switch");
				return ERR_PARSE_ERROR;
			}
			BlockNode *switch_block = alloc_node<BlockNode>();
			switch_block->block_type = BlockNode::BLOCK_TYPE_SWITCH;
			switch_block->parent_block = p_block;
			cf->expressions.push_back(n);
			cf->blocks.push_back(switch_block);
			p_block->statements.push_back(cf);
			int prev_type = TK_CF_CASE;
			while (true) { 
				if (_parse_block(switch_block, p_function_info, true, true, false) != OK) {
					return ERR_PARSE_ERROR;
				}
				pos = _get_tkpos();
				tk = _get_token();
				if (tk.type == TK_CF_CASE || tk.type == TK_CF_DEFAULT) {
					if (prev_type == TK_CF_DEFAULT) {
						if (tk.type == TK_CF_CASE) {
							_set_error(RTR("Cases must be defined before default case."));
							return ERR_PARSE_ERROR;
						} else if (prev_type == TK_CF_DEFAULT) {
							_set_error(RTR("Default case must be defined only once."));
							return ERR_PARSE_ERROR;
						}
					}
					prev_type = tk.type;
					_set_tkpos(pos);
					continue;