fix: demoted react-intl to v5

[BilalQamar95]

Description:

Demoted react-intl to v5 in light of breaking tests for consumers.

Merge checklist:

• [ ] Consider running your code modifications in the included example app within frontend-platform. This can be done by running npm start and opening http://localhost:8080.
• [ ] Consider testing your code modifications in another local micro-frontend using local aliases configured via the module.config.js file in frontend-build.
• [ ] Verify your commit title/body conforms to the conventional commits format (e.g., fix, feat) and is appropriate for your code change. Consider whether your code is a breaking change, and modify your commit accordingly.

Post merge:

• [ ] After the build finishes for the merged commit, verify the new release has been pushed to NPM.

[codecov[bot]]

Codecov Report

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

Comparison is base (755e890) 0.00% compared to head (3833394) 83.22%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #592 +/- ## =========================================== + Coverage 0 83.22% +83.22% =========================================== Files 0 40 +40 Lines 0 1073 +1073 Branches 0 197 +197 =========================================== + Hits 0 893 +893 - Misses 0 168 +168 - Partials 0 12 +12 ``` [see 40 files with indirect coverage changes](https://app.codecov.io/gh/openedx/frontend-platform/pull/592/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openedx)

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.