feat: remove lib v2 beta badge

[rpenido]

Description

This PR removes the Beta badge from the Libraries tab.

Before

After

• Which user roles will this change impact?
  "Course Author"

Supporting information

• Related to Remove "Beta" from Libraries Tab #2878

Testing instructions

• Open the course authoring main page and check that the badge was removed.

Best Practices Checklist

We're trying to move away from some deprecated patterns in this codebase. Please
check if your PR meets these recommendations before asking for a review:

• Any new files are using TypeScript (.ts, .tsx).
• Avoid propTypes and defaultProps in any new or modified code.
• Tests should use the helpers in src/testUtils.tsx (specifically initializeMocks)
• Do not add new fields to the Redux state/store. Use React Context to share state among multiple components.
• Use React Query to load data from REST APIs. See any apiHooks.ts in this repo for examples.
• All new i18n messages in messages.ts files have a description for translators to use.
• Avoid using ../ in import paths. To import from parent folders, use @src, e.g. import { initializeMocks } from '@src/testUtils'; instead of from '../../../../testUtils'

---

Private ref: [FAL-4334](https://tasks.opencraft.com/browse/FAL-4334]

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Thanks for the pull request, @rpenido!

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.51%. Comparing base (4d5c583) to head (a821ac7).

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #2951    +/-   ##
========================================
  Coverage   95.51%   95.51%            
========================================
  Files        1330     1330            
  Lines       30582    30582            
  Branches     6716     6927   +211     
========================================
  Hits        29211    29211            
+ Misses       1315     1303    -12     
- Partials       56       68    +12     

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