Find references don't work when cursor is on a modifier

Try using `find all references` with the cursor on a modifier such as `public` or `async`

```ts
class Foo {
  public async bar() {}
}

const fooInstance = new Foo();
fooInstance.bar();
```

### Bug
This returns no references. It seems like the the cursor has to be on `bar`


This is a change in behavior vs the mainline TS

