'Use element access' quick fix doesn't respect quote style

```ts
declare let x: { [x: string]: number };

x.yadda/**/;
```

Specify a quote style of 'single' and apply the quick fix at `/**/`.

Currently this is changed to

```ts
declare let x: { [x: string]: number };

x["yadda"];
```

but should switch to

```ts
declare let x: { [x: string]: number };

x['yadda'];
```