Failing test: incorrect loc for attrs following valueless attr.
Failing test: incorrect loc for attrs following valueless attr.

Given the following:

```hbs
<div
  data-foo
  class="blah"
></div>
```

We currently suggest that the `AttrNode` for `class` starts _after_ the
`c` in `class`, this is definitely incorrect. The fix will need to be
made in simple-html-tokenizer.

glimmerjs/glimmer-vm,glimmerjs/glimmer-vm,tildeio/glimmer,glimmerjs/glimmer-vm,tildeio/glimmer,tildeio/glimmer