Fix Radio fade issue related to zoomed text

[SonicScrewdriver]

Summary:

Issue: MOB-5649

Test plan:

[github-actions]

🗄️ Schema Change: No Changes ✅

[github-actions]

Size Change: +22 B (0%)

Total Size: 485 kB

Filename	Size	Change
packages/perseus/dist/es/index.js	187 kB	+22 B (+0.01%)

ℹ️ View Unchanged

Filename	Size
packages/kas/dist/es/index.js	20.8 kB
packages/keypad-context/dist/es/index.js	1 kB
packages/kmath/dist/es/index.js	5.96 kB
packages/math-input/dist/es/index.js	98.5 kB
packages/math-input/dist/es/strings.js	1.61 kB
packages/perseus-core/dist/es/index.item-splitting.js	11.8 kB
packages/perseus-core/dist/es/index.js	24.8 kB
packages/perseus-editor/dist/es/index.js	99.4 kB
packages/perseus-linter/dist/es/index.js	8.83 kB
packages/perseus-score/dist/es/index.js	9.26 kB
packages/perseus-utils/dist/es/index.js	403 B
packages/perseus/dist/es/strings.js	7.49 kB
packages/pure-markdown/dist/es/index.js	1.39 kB
packages/simple-markdown/dist/es/index.js	6.71 kB

_{compressed-size-action}

[github-actions]

🛠️ Item Splitting: No Changes ✅

[github-actions]

npm Snapshot: Published

Good news!! We've packaged up the latest commit from this PR (928b411) and published it to npm. You
can install it using the tag PR3290.

Example:

pnpm add @khanacademy/perseus@PR3290

If you are working in Khan Academy's frontend, you can run the below command.

./dev/tools/bump_perseus_version.ts -t PR3290

If you are working in Khan Academy's webapp, you can run the below command.

./dev/tools/bump_perseus_version.js -t PR3290