Parser: `let.x;` or `let?.x;` is parsed as 2 statements

Fixing #16839 surfaced another obscure bug.

```js
let.x;
let?.x;
```

These are each parsed as 2 statements - 1 x `ExpressionStatement` + 1 x `EmptyStatement`.

[Playground](https://playground.oxc.rs/#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)

Once fixed, this idempotency test failure for `oxc_codegen` should be resolved:

https://github.com/oxc-project/oxc/blob/c7c05ba2612ca84978214cff7c1e9e836a5b319b/tasks/coverage/snapshots/codegen_misc.snap#L4

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Parser: `let.x;` or `let?.x;` is parsed as 2 statements #16856

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Parser: let.x; or let?.x; is parsed as 2 statements #16856

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Parser: `let.x;` or `let?.x;` is parsed as 2 statements #16856