### Godot version

v4.0.beta13.official [caacade56]

### System information

Windows 8.1

### Issue description

The `Unreachable code (statement after return) in function 'function_name()'` warning is given for functions that do not have unreachable code. The same code does not give this warning in v3.5.stable.official [991bb6ac7].

### Steps to reproduce

```
func warning(i: int) -> void:
  if i == 0:
    pass
  elif i == 1:
    return
  else:
    return
  print("yeah")
```

Removing either the `elif` or the `else` removes the warning.

### Minimal reproduction project

N/A; code in reproduction steps can be placed in any blank gdscript file to trigger the error.
function->parameters_indices[parameter->identifier->name] = 0;
				function->parameters.push_back(parameter);
			}
			complete_extents(parameter);
			consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected ")" after parameter name.)*");
			consume(GDScriptTokenizer::Token::COLON, R"*(Expected ":" after ")".)*");
			FunctionNode *previous_function = current_function;
			current_function = function;
			if (p_variable->setter_parameter != nullptr) {
				SuiteNode *body = alloc_node<SuiteNode>();
				body->add_local(parameter, function);
				function->body = parse_suite("setter declaration", body);
				p_variable->setter = function;
			}
			current_function = previous_function;
			complete_extents(function);
			break;
		}
		case VariableNode::PROP_SETGET:
			consume(GDScriptTokenizer::Token::EQUAL, R"(Expected "=" after "set")");
			make_completion_context(COMPLETION_PROPERTY_METHOD, p_variable);
			if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected setter function name after "=".)")) {
				p_variable->setter_pointer = parse_identifier();
			}
			break;
		case VariableNode::PROP_NONE:
			break; 
	}
}
void GDScriptParser::parse_property_getter(VariableNode *p_variable) {