Code Action to close root element closing tag inserts wrong closing tag

Given this XML:

```xml
<?xml version="1.0" encoding="UTF-8"?>
<a attr=""></a
```

There is a code action to close `<a>` with `</a>`. However, the result is:

```xml
<?xml version="1.0" encoding="UTF-8"?>
<a attr=""></a></a
```