19291 - Prettier — ContextQMD

Support formatting LWC (Lightning Web Components) syntax in code block (#19291 by @fisker)

<!-- Input -->
```lwc
<test-this attr={test}>
    Awesome </test-this>
```

<!-- Prettier stable -->
Same as input

<!-- Prettier main -->
```lwc
<test-this attr={test}> Awesome </test-this>
```