Fix sort failure in badge creation when only one MATLAB version is tested

[Copilot]

When only one MATLAB release is present, regexp on a scalar string returns the match directly (not in a cell), causing {:} indexing to extract individual characters. sort then operates on a 6-element char array instead of a 1-element string, producing out-of-bounds indices for a 1-element testResultsListing.

Changes

• getReleaseNamesFromFolderPaths: Pass folderPaths through cellstr() before regexp to force cell array output regardless of input size; wrap result with string() for consistent type:

  % Before
  releaseNames = regexp(folderPaths, 'R\d{4}[ab]', 'match');
  result = [releaseNames{:}];
  
  % After
  releaseNames = regexp(cellstr(folderPaths), 'R\d{4}[ab]', 'match');
  result = string([releaseNames{:}]);

• Sort alignment: releaseNames was not reordered alongside testResultsListing, causing mismatched release name/file pairs in the loop for multi-version runs. Added releaseNames = releaseNames(sortedIndices).

• Cleanup: Removed unused folderNames variable and stray disp call.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[github-actions]

Test Results

21 tests   21 ✅  24s ⏱️
 5 suites   0 💤
 1 files     0 ❌

Results for commit 3e7d4e0.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.72%. Comparing base (2491817) to head (3e7d4e0).
⚠️ Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...e/+matbox/+tasks/createTestedWithBadgeforToolbox.m	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #48      +/-   ##
==========================================
- Coverage   42.26%   41.72%   -0.55%     
==========================================
  Files          59       59              
  Lines        1455     1462       +7     
==========================================
- Hits          615      610       -5     
- Misses        840      852      +12     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.