[MLv2] [FE] PinnedQuestionLoader - data permission check

[ranquild]

metabase/frontend/src/metabase/collections/components/PinnedQuestionCard/PinnedQuestionLoader.tsx

Line 45 in d1df0c6

if (loading !== false || !loadedQuestion.legacyQuery()) {

It uses legacyQuery to check for if the user permissions to run the query (if not, dataset_query would be null). Find another way to do it, e.g. add a method to Question class that would check for datasetQuery directly.