UNFINISHED_CSS_VALUE not firing

[flukeout]

Based on the strings we're showing for this...

"UNFINISHED_CSS_VALUE": "<p>Value <em data-highlight='[[cssValue.start]],[[cssValue.end]]'>[[cssValue.value]]</em> still needs finalizing with ;</p>",

...I'd imagine that we are trying to catch the following case, where the ; is missing after the rule.

p {
  color: pink
}

But, it definitely seems like we are not...

cc @Pomax