Make the vector_agg_groupagg test collation-independent

[akuzm]

The dashes can sort differently based on collation, so the test can fail depending on the locale. Remove the dashes to fix.

[github-actions]

@kpan2034, @dbeck: please review this pull request.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.51%. Comparing base (f101bcb) to head (3da4799).
⚠️ Report is 143 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8650      +/-   ##
==========================================
+ Coverage   82.45%   82.51%   +0.06%     
==========================================
  Files         247      247              
  Lines       47556    47528      -28     
  Branches    12097    12093       -4     
==========================================
+ Hits        39210    39219       +9     
- Misses       3482     3500      +18     
+ Partials     4864     4809      -55     

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[dbeck]

LGTM

I was wondering, would it also work if you simply set the client collation in the SQL script?

[akuzm]

LGTM

I was wondering, would it also work if you simply set the client collation in the SQL script?

I think it could also work. I'm not sure how to do this properly and whether this should be done for all tests then, not individually.