fix(LEMS-2082): update expression popover role and remove aria-checked

[anakaren-rojas]

Summary:

Issue Summary

Based on a Level Access audit, the keypad button in the expression widget

• doesn't have the appropriate role
• misuses the aria-checked label

Fix Summary

• Updated Clickable component's role to be button
• Removed aria-checked

Issue: LEMS-2082

Test plan:

1. Navigate to Expression Widget
2. Click the expression widget
   
3. Fix reflects updated component role and does not display 'aria-checked'

Screenshots

Before

After

[khan-actions-bot]

Gerald

Required Reviewers

• @Khan/perseus for changes to .changeset/tidy-zebras-dream.md, packages/perseus/src/components/math-input.tsx, packages/perseus/src/components/__tests__/math-input.test.tsx, packages/perseus-editor/src/widgets/__tests__/expression-editor.test.tsx

---

Don't want to be involved in this pull request? Comment #removeme and we won't notify you of further changes.

[github-actions]

npm Snapshot: Published

Good news!! We've packaged up the latest commit from this PR (076a10c) and published it to npm. You
can install it using the tag PR1371.

Example:

yarn add @khanacademy/perseus@PR1371

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

./dev/tools/bump_perseus_version.sh -t PR1371

[github-actions]

Size Change: -13 B (0%)

Total Size: 845 kB

Filename	Size	Change
packages/perseus/dist/es/index.js	407 kB	-13 B (0%)

ℹ️ View Unchanged

Filename	Size
packages/kas/dist/es/index.js	38.2 kB
packages/kmath/dist/es/index.js	4.26 kB
packages/math-input/dist/es/index.js	80.1 kB
packages/math-input/dist/es/strings.js	1.73 kB
packages/perseus-core/dist/es/index.js	906 B
packages/perseus-editor/dist/es/index.js	272 kB
packages/perseus-error/dist/es/index.js	866 B
packages/perseus-linter/dist/es/index.js	21.8 kB
packages/perseus/dist/es/strings.js	3.21 kB
packages/pure-markdown/dist/es/index.js	3.67 kB
packages/simple-markdown/dist/es/index.js	12.4 kB

_{compressed-size-action}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.26%. Comparing base (9615106) to head (076a10c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1371      +/-   ##
==========================================
+ Coverage   69.74%   71.26%   +1.51%     
==========================================
  Files         491      495       +4     
  Lines      103844   103926      +82     
  Branches     7498    11224    +3726     
==========================================
+ Hits        72426    74061    +1635     
+ Misses      31240    29865    -1375     
+ Partials      178        0     -178     

Files	Coverage Δ
packages/perseus/src/components/math-input.tsx	81.02% <100.00%> (-0.61%)	⬇️

... and 140 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9615106...076a10c. Read the comment docs.

[catandthemachines]

Looking good Anakaren!