False positive with `ThatThan` linter

> It's even cooler that he got the passion from his Dad.

This is a context in which "that" can legitimately follow an adjective in the comparative form.

I'm not sure how to disambiguate the legit case from the error case as these snippets would all be legit:
- cooler than
- even cooler than
- cooler than he (than he is, than he thinks, etc.)
- It's even cooler than

It probably/possibly not possible to know it's a mistake until we get to where "got" has an object.

Start by locating the ThatThan linter implementation and its existing tests. Reproduce the reported sentence and add coverage for the listed legitimate comparative forms; done means the valid cases are accepted without losing detection of the intended error cases.

Written by the indexing model from the issue text.