[feature/peich] merge with main.

Author: catandthemachines

.changeset/grumpy-keys-join.md

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+---
+"@khanacademy/perseus": minor
+"@khanacademy/perseus-core": minor
+"@khanacademy/perseus-score": minor
+---
+
+Updates to Radio Scoring to ensure non-specific multiselect questions are marked correctly.

.changeset/heavy-fishes-hammer.md

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+---
+"@khanacademy/perseus-core": patch
+---
+
+Add recursive typesafe parser for Group's user input type with supporting utilities and widget ID parsing refactor