feat: Enable is_first/last_distinct for not nested non-numeric list

[reswqa]

Since we have shift to row-encode for group-by list. I think we could get rid of the limitation for is_first/last_distinct also.

[codspeed-hq]

CodSpeed Performance Report

Merging #15552 will not alter performance

_{Comparing reswqa:list_first_last (4d55d5c) with main (44f1097)}

Summary

✅ 22 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.17%. Comparing base (44f1097) to head (4d55d5c).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #15552   +/-   ##
=======================================
  Coverage   81.16%   81.17%           
=======================================
  Files        1367     1367           
  Lines      175307   175322   +15     
  Branches     2527     2530    +3     
=======================================
+ Hits       142296   142321   +25     
+ Misses      32534    32525    -9     
+ Partials      477      476    -1     

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