planner: remove constant sort items after substitution

[zz-jason]

What problem does this PR solve?

fix #9331

What is changed and how it works?

remove remove meaningless constant sort items after column substitution.

Check List

Tests

• Integration test

Related changes

• Need to cherry-pick to the release branch

[zz-jason]

/run-all-tests

[zz-jason]

This PR fixes the broken integration tests, please review it in a high priority.

[codecov-io]

Codecov Report

Merging #9333 into master will increase coverage by <.01%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##           master    #9333      +/-   ##
==========================================
+ Coverage   67.21%   67.22%   +<.01%     
==========================================
  Files         371      371              
  Lines       77552    77556       +4     
==========================================
+ Hits        52125    52134       +9     
+ Misses      20772    20771       -1     
+ Partials     4655     4651       -4

Impacted Files	Coverage Δ
planner/core/rule_topn_push_down.go	92.68% <50%> (-2.19%)	⬇️
store/tikv/scan.go	73.94% <0%> (-3.37%)	⬇️
expression/schema.go	93.75% <0%> (-0.79%)	⬇️
executor/join.go	78.9% <0%> (+0.52%)	⬆️
infoschema/infoschema.go	77.63% <0%> (+1.31%)	⬆️
ddl/delete_range.go	79.36% <0%> (+4.23%)	⬆️

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[XuHuaiyu]

LGTM

only 1 LGTM

[eurekaka]

LGTM