SVG rendering broken in Sketch 85.1

_I am..._

| -------------------------------------------------------------------------------------------------
| Reporting a bug or issue
| -------------------------------------------------------------------------------------------------

**Expected behavior:**

Should render an SVG

**Observed behavior:**

```sh
TypeError: svgImporter.graph().width is not a function. (In 'svgImporter.graph().width()', 'svgImporter.graph().width' is undefined)
```

**How to reproduce:**

```sh
curl https://codeload.github.com/airbnb/react-sketchapp/tar.gz/master | tar -xz --strip=2 react-sketchapp-master/examples/basic-svg
cd basic-svg
```

**Sketch version:**

85.1

**Please attach screenshots, a zip file of your project, and/or a link to your github project**

https://github.com/airbnb/react-sketchapp/tree/master/examples/basic-svg

Start with the examples/basic-svg reproduction and trace the failing svgImporter.graph().width() call shown in the report. Verify the result in Sketch 85.1: the example should render its SVG without the reported TypeError.

Written by the indexing model from the issue text.