Split out Table validator

[handeyeco]

Summary:

Split out validation logic for the table widget

Issue: LEMS-2482

Test plan:

Nothing should change, just moving code

[khan-actions-bot]

Gerald

Required Reviewers

• @Khan/perseus for changes to .changeset/dirty-walls-brake.md, packages/perseus/src/widgets/table/table-validator.test.ts, packages/perseus/src/widgets/table/table-validator.ts, packages/perseus/src/widgets/table/table.tsx

---

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[github-actions]

npm Snapshot: Published

Good news!! We've packaged up the latest commit from this PR (81dd421) and published it to npm. You
can install it using the tag PR1704.

Example:

yarn add @khanacademy/perseus@PR1704

If you are working in Khan Academy's webapp, you can run:

./dev/tools/bump_perseus_version.sh -t PR1704

[github-actions]

Size Change: -13 B (0%)

Total Size: 863 kB

Filename	Size	Change
packages/perseus/dist/es/index.js	418 kB	-13 B (0%)

ℹ️ View Unchanged

Filename	Size
packages/kas/dist/es/index.js	38.3 kB
packages/keypad-context/dist/es/index.js	760 B
packages/kmath/dist/es/index.js	4.27 kB
packages/math-input/dist/es/index.js	78 kB
packages/math-input/dist/es/strings.js	1.79 kB
packages/perseus-core/dist/es/index.js	1.48 kB
packages/perseus-editor/dist/es/index.js	279 kB
packages/perseus-linter/dist/es/index.js	22.2 kB
packages/perseus/dist/es/strings.js	3.4 kB
packages/pure-markdown/dist/es/index.js	3.66 kB
packages/simple-markdown/dist/es/index.js	12.4 kB

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[Myranae]

Looks great! Thank you~