adjust test from the scanner

The reason we get `class` is because the pre-process step for Svelte
files will replace `class:` with `class `, this means that the input
looks like:
```diff
- <div class:px-4='condition'></div>
+ <div class px-4='condition'></div>
```

The reason we _don't_ get the `div` anymore, is because it's preceded by
an invalid boundary character (`<`) and therefore we skip ahead to the
next valid boundary character even though `div` on its own is a
perfectly valid candidate.

Author: RobinMalfait

crates/oxide/tests/scanner.rs

@@ -340,8 +340,8 @@ mod scanner {
             candidates,
             vec![
                 "bool",
+                "class",
                 "condition",
-                "div",
                 "font-bold",
                 "md:flex",
                 "px-4",