fix(sort operator): enumerate() should be before filter()

[soundOfDestiny]

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What's changed and what's your intention?

enumerate() should be before filter()

Checklist

• All checks passed in ./risedev check (or alias, ./risedev c)

Refer to a related PR or issue link (optional)

#6085

[codecov]

Codecov Report

Merging #6310 (f4ec707) into main (daf3ea3) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #6310   +/-   ##
=======================================
  Coverage   74.34%   74.34%           
=======================================
  Files         953      953           
  Lines      154348   154348           
=======================================
  Hits       114754   114754           
  Misses      39594    39594           

Flag	Coverage Δ
rust	74.34% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/stream/src/executor/sort.rs	88.57% <100.00%> (ø)
src/stream/src/executor/aggregation/minput.rs	96.39% <0.00%> (-0.11%)	⬇️
src/common/src/types/ordered_float.rs	33.00% <0.00%> (+0.19%)	⬆️

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[fuyufjh]

Seems correct 🤔. PTAL @xx01cyx

[BugenZhao]

@yuhao-su has extracted a method for this. How about using that?

[soundOfDestiny]

@yuhao-su has extracted a method for this. How about using that?

fixed