chore: Migrate deprecated Table to DataTable for RegisteredLearnersTable

[zwidekalanga]

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)

Only if submitting a visual change

• Ensure to attach screenshots
• Ensure to have UX team confirm screenshots

Screenshot

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 27 lines in your changes missing coverage. Please review.

Project coverage is 85.35%. Comparing base (115c430) to head (69f4117).

Files with missing lines	Patch %	Lines
...dLearnersTable/data/hooks/useRegisteredLearners.js	26.47%	21 Missing and 4 partials ⚠️
src/components/RegisteredLearnersTable/index.jsx	77.77%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1289      +/-   ##
==========================================
- Coverage   85.52%   85.35%   -0.17%     
==========================================
  Files         564      565       +1     
  Lines       12351    12392      +41     
  Branches     2621     2625       +4     
==========================================
+ Hits        10563    10577      +14     
- Misses       1729     1752      +23     
- Partials       59       63       +4     

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