Part of #18714: Replacing typography consts with enums

[dhruvv173]

Explanation

This PR is a part of #18714
Replaced Typography consts with enums in the file ui/components/app/asset-list/asset-list.js

Screenshots/Screencaps

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After

Manual Testing Steps

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• I've clearly explained:
  • What problem this PR is solving
  • How this problem was solved
  • How reviewers can test my changes
• Sufficient automated test coverage has been added

Pre-merge reviewer checklist

• Manual testing (e.g. pull and build branch, run in browser, test code being changed)
• PR is linked to the appropriate GitHub issue
• IF this PR fixes a bug in the release milestone, add this PR to the release milestone

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[dhruvv173]

hey @georgewrmarshall could you check this PR once, it fails the snaps test.
The yarn jest path/to/folder --updateSnapshot did not work, am I supposed to run any other command to update the changes?

Edit: It passed all the tests. @georgewrmarshall can I continue making changes to other files in the same way?
Thanks alot!

[georgewrmarshall]

LGTM! Just rerunning e2e tests. Thanks for your contribution 👍