*: revert #27021 to fix a bug that selection can not be pushed down when having clause above aggregation (#33168)

[ti-srebot]

cherry-pick #33168 to release-5.2
You can switch your code base to this Pull Request by using git-extras:

# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/33181

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/tidb.git pr/33181:release-5.2-47e4b5bf312a

---

Signed-off-by: wjhuang2016 huangwenjun1997@gmail.com

What problem does this PR solve?

Issue Number: close #33166

Problem Summary:
I don't know why #27021 get merged, but it's totally wrong.
First, selection can be pushed down when having clause above aggregation, it's true.
Second, the root cause of #26496 is the same as #30094, which is fixed by #30120

What is changed and how it works?

Revert #27021

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

fix a bug that selection can not be pushed down when having clause above aggregation

[ti-chi-bot]

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[ti-srebot]

/run-all-tests

[ti-srebot]

@wjhuang2016 you're already a collaborator in bot's repo.

[VelocityLight]

This pull request is closed because it's related version has closed automatic cherry-picking.
If it's still needed, you can reopen it or just regenerate it using bot,
see:

• https://prow.tidb.io/command-help#cherrypick
• https://book.prow.tidb.net/#/plugins/cherrypicker

You can find more details at:

• https://internals.tidb.io/t/topic/785