### 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(get_node);
				return nullptr;
			}
			get_node->full_path += "%";
			path_state = PATH_STATE_PERCENT;
		} else if (previous.type == GDScriptTokenizer::Token::SLASH) {
			if (path_state != PATH_STATE_START && path_state != PATH_STATE_NODE_NAME) {
				push_error(R"("/" is only valid at the beginning of the path or after a node name.)");
				complete_extents(get_node);
				return nullptr;
			}
			get_node->full_path += "/";
			path_state = PATH_STATE_SLASH;
		}
		make_completion_context(COMPLETION_GET_NODE, get_node, context_argument++);
		if (match(GDScriptTokenizer::Token::LITERAL)) {
			if (previous.literal.get_type() != Variant::STRING) {
				String previous_token;
				switch (path_state) {
					case PATH_STATE_START:
						previous_token = "$";
						break;
					case PATH_STATE_PERCENT:
						previous_token = "%";
						break;
					case PATH_STATE_SLASH:
						previous_token = "/";
						break;
					default:
						break;