Release @khanacademy/perseus@51.0.0 · Khan/perseus

#2101 9cabe689a Thanks @handeyeco! - Move scorers and validators to perseus-score

#2127 6f2813cfc Thanks @benchristel! - Avoid adding undefined values to objects parsed from Perseus JSON when properties are missing.

#2130 165305e11 Thanks @jeremywiebe! - Change interactive-graph visual regression stories to Storybook's CSF v3
#2077 faccc2d59 Thanks @benchristel! - Internal: Enable the exhaustive test tool for parsePerseusItem to test articles.
#2030 d96821e08 Thanks @nishasy! - [SR] Linear System - add screen reader support for Linear System interactive graph
#2036 0f8d11c0b Thanks @nishasy! - [SR] Ray graph - Add screen reader support for Ray interactive graph
#2109 41ffd4a71 Thanks @dependabot! - Updating our wonder-blocks packages with the latest versions.
Updated dependencies [9cabe689a, 41ffd4a71]:
- @khanacademy/kmath@0.3.0
- @khanacademy/perseus-core@3.2.0
- @khanacademy/perseus-score@1.1.0
- @khanacademy/math-input@22.2.1
- @khanacademy/kas@0.4.11
- @khanacademy/keypad-context@1.0.14
- @khanacademy/perseus-linter@1.2.13
- @khanacademy/pure-markdown@0.3.22
- @khanacademy/simple-markdown@0.13.15

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