session: remove pause all jobs when upgrading

[zimulala]

What problem does this PR solve?

Issue Number: close #46228, close #46227

Problem Summary:

What is changed and how it works?

• remove pause all jobs when upgrading
• update TestUpgradeWithPauseDDL and add a comment.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
  Pass the issue's test.
• 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

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

None

[tiprow]

Hi @zimulala. Thanks for your PR.

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[codecov]

Codecov Report

Merging #46234 (063d9e5) into master (6188778) will decrease coverage by 0.5824%.
Report is 14 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #46234        +/-   ##
================================================
- Coverage   73.3768%   72.7944%   -0.5825%     
================================================
  Files          1285       1306        +21     
  Lines        394364     401209      +6845     
================================================
+ Hits         289372     292058      +2686     
- Misses        86557      90671      +4114     
- Partials      18435      18480        +45     

Flag	Coverage Δ
integration	25.6352% <ø> (?)
unit	73.4725% <ø> (+0.0956%)	⬆️

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

Components	Coverage Δ
dumpling	54.0444% <ø> (ø)
parser	85.0667% <ø> (-0.0098%)	⬇️
br	47.9168% <ø> (-4.3758%)	⬇️

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-08-18 10:51:18.105452076 +0000 UTC m=+887442.654468063: ☑️ agreed by Defined2014.
• 2023-08-18 12:27:31.956975136 +0000 UTC m=+893216.505991123: ☑️ agreed by hawkingrei.

[zimulala]

/retest-required

[tiprow]

@zimulala: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest-required

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[easonn7]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, easonn7, hawkingrei

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Needs approval from an approver in each of these files:

• OWNERS [Defined2014,hawkingrei]
• session/OWNERS [easonn7]

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[zimulala]

/retest-required

[tiprow]

@zimulala: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest-required

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #46265.