minor: reenable failing mark join test

[comphead]

Which issue does this PR close?

• Related Fix join correctness issue #24854 .

Rationale for this change

Reenable test for slt join matrix test, after #21585 merged

What changes are included in this PR?

What is the testing strategy for this PR?

Are there any user-facing changes?

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.61%. Comparing base (ac78aa0) to head (b37479a).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #24863      +/-   ##
==========================================
+ Coverage   81.60%   81.61%   +0.01%     
==========================================
  Files        1123     1123              
  Lines      408898   409392     +494     
  Branches   408898   409392     +494     
==========================================
+ Hits       333674   334132     +458     
- Misses      55623    55638      +15     
- Partials    19601    19622      +21     

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