Formatter generates invalid code with StmtAssign, parentheses and comments

Input:
```python
x = (
    # a
    ( # b
        1
    )
)
```
Output:
```python
x = # a
(  # b
    1
)
```
Playground link: https://play.ruff.rs/70f3526e-34ac-46e3-a0cf-098a60537a91