chore: Update @edx/frontend-lib-learning-assistant to v2.4.1

[rijuma]

This update incorporates new experimental features for Xpert AI Assistant.

Updated Features

• Fetches chat history when loading Xpert (https://github.com/edx/frontend-lib-learning-assistant/issues/64) (bc2e7a1)
• Removed unused gpt 4 experiment code (https://github.com/edx/frontend-lib-learning-assistant/issues/61) (b89d9ec)

[codecov[bot]]

Codecov Report

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

Project coverage is 89.25%. Comparing base (2ff8c39) to head (b0998a6). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1518 +/- ## ======================================= Coverage 89.25% 89.25% ======================================= Files 318 318 Lines 5563 5563 Branches 1379 1376 -3 ======================================= Hits 4965 4965 Misses 582 582 Partials 16 16 ```

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