fix: unify font-family with paragon component styles

[ihor-romaniuk]

Description

This pull request contains recommendations for fixing custom font-family and make it unified with all MFEs and Paragon components. All MFEs must have the same default appearance and change them globally via brand-openedx component on demand.

Related Pull Requests

PR to the open-release/palm.master branch: https://github.com/openedx/frontend-app-discussions/pull/596 PR to the master branch: https://github.com/openedx/frontend-app-discussions/pull/598

Screenshots/sandbox (optional):

Before	After

Merge Checklist

• [ ] If your update includes visual changes, have they been reviewed by a designer? Send them a link to the Sandbox, if applicable.
• [ ] Is there adequate test coverage for your changes?

Post-merge Checklist

• [ ] Deploy the changes to prod after verifying on stage or ask @openedx/edx-infinity to do it.
• [ ] 🎉 🙌 Celebrate! Thanks for your contribution.

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (6721225) 92.32% compared to head (922aab7) 92.32%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## open-release/quince.master #597 +/- ## =========================================================== Coverage 92.32% 92.32% =========================================================== Files 169 169 Lines 3451 3451 Branches 899 899 =========================================================== Hits 3186 3186 Misses 244 244 Partials 21 21 ``` | [Files](https://app.codecov.io/gh/openedx/frontend-app-discussions/pull/597?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openedx) | Coverage Δ | | |---|---|---| | [src/discussions/common/AuthorLabel.jsx](https://app.codecov.io/gh/openedx/frontend-app-discussions/pull/597?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openedx#diff-c3JjL2Rpc2N1c3Npb25zL2NvbW1vbi9BdXRob3JMYWJlbC5qc3g=) | `100.00% <ø> (ø)` | | | [src/discussions/common/EndorsedAlertBanner.jsx](https://app.codecov.io/gh/openedx/frontend-app-discussions/pull/597?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openedx#diff-c3JjL2Rpc2N1c3Npb25zL2NvbW1vbi9FbmRvcnNlZEFsZXJ0QmFubmVyLmpzeA==) | `100.00% <ø> (ø)` | |

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[mphilbrick211]

Hi @openedx/edx-infinity! This is ready after the master is merged. Thanks!

[openedx-webhooks]

@ihor-romaniuk 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.