SWC plugin not consistently checking renamed imports via yak_library_imports

[Mad-Kat]

Our SWC plugin currently implements yak_library_imports to track how our functions are imported and renamed. This allows us to properly handle cases like:

import {css as YakCSS} from "next-yak"

const Mixin = YakCSS`
  color: red;
`;

However, this import tracking mechanism isn't consistently applied throughout the plugin. There appear to be code paths where we're not checking the real import names, causing incorrect behavior with renamed imports.

[jantimon]

would be great to create a fixture test for this case