We correct the statement and proof of [Trans. Amer. Math. Soc. 369 (2021), pp. 5509–5544, Proposition 4.10] and straighten out [Trans. Amer. Math. Soc. 369 (2021), pp. 5509–5544, Example 4.13] accordingly. We take this chance to correct a sentence within [Trans. Amer. Math. Soc. 369 (2021), pp. 5509–5544, Examples 1.13].