### 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.
complete_extents(n_return);
			result = n_return;
			current_suite->has_return = true;
			end_statement("return statement");
			break;
		}
		case GDScriptTokenizer::Token::BREAKPOINT:
			advance();
			result = alloc_node<BreakpointNode>();
			complete_extents(result);
			end_statement(R"("breakpoint")");
			break;
		case GDScriptTokenizer::Token::ASSERT:
			advance();
			result = parse_assert();
			break;
		case GDScriptTokenizer::Token::ANNOTATION: {
			advance();
			is_annotation = true;
			AnnotationNode *annotation = parse_annotation(AnnotationInfo::STATEMENT);
			if (annotation != nullptr) {
				annotation_stack.push_back(annotation);
			}
			break;
		}
		default: {
			
			ExpressionNode *expression = parse_expression(true); 
			bool has_ended_lambda = false;
			if (expression == nullptr) {