Remove the flooring step from list accesses when index is integer

<img width="229" height="114" alt="Image" src="https://github.com/user-attachments/assets/b575a7ca-5391-4f57-983a-21255fe1f44f" />

Top one:

```js
(b0.value[(b0.value.length | 0) - 1] ?? "")
```

Bottom one:

```js
(b0.value[b0.value.length - 1] ?? "")
```

Ideally these should compile to the same thing since we can know that the length is always an integer, so the |0 is unnecessary
