session: set EnableWindowFunction for all SessionVars

[winoros]

What problem does this PR solve?

Issue Number: close #55981

Problem Summary:

What changed and how does it work?

Some internal sessions may not set EnableWindowFunction correctly.
As a result, the binding containing window functions might fail at <=v6.5.10 and <=v7.5.3 and <=v7.1.5

Check List

Tests

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

  • I checked and no code files have been changed.

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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-10 16:08:00.278750517 +0000 UTC m=+372550.019174476: ☑️ agreed by hawkingrei.
• 2024-09-10 16:08:20.432273576 +0000 UTC m=+372570.172697508: ☑️ agreed by jackysp.

[winoros]

/check-issue-triage-complete

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, jackysp, yudongusa

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Needs approval from an approver in each of these files:

• OWNERS [hawkingrei,jackysp]
• pkg/sessionctx/variable/OWNERS [yudongusa]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.4975%. Comparing base (f9c4773) to head (ae1ae38).
Report is 13 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #55991         +/-   ##
=================================================
- Coverage   72.9463%   56.4975%   -16.4488%     
=================================================
  Files          1605       1730        +125     
  Lines        446061     628133     +182072     
=================================================
+ Hits         325385     354880      +29495     
- Misses       100628     249310     +148682     
- Partials      20048      23943       +3895     

Flag	Coverage Δ
integration	37.2651% <100.0000%> (?)
unit	72.0530% <100.0000%> (+<0.0001%)	⬆️

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

Components	Coverage Δ
dumpling	52.9567% <ø> (ø)
parser	∅ <ø> (∅)
br	52.8673% <ø> (+7.0859%)	⬆️

[winoros]

/test check_dev_2

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/test check-dev2

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@winoros: The specified target(s) for /test were not found.
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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.1: #55996.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #55997.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #55998.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #55999.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #56000.