session: make TestUpgradeVersionForResumeJob faster

[zimulala]

What problem does this PR solve?

Issue Number: close #50292

Problem Summary:
The two "add index" jobIDs are not necessarily serial in OnGetJobBeforeExported after #48728.

What changed and how does it work?

Remove the duplicated check.

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

[tiprow]

Hi @zimulala. Thanks for your PR.

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[codecov]

Codecov Report

Merging #50299 (af8ddd6) into master (4252974) will decrease coverage by 16.2515%.
Report is 7 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #50299         +/-   ##
=================================================
- Coverage   71.8495%   55.5981%   -16.2515%     
=================================================
  Files          1443       1555        +112     
  Lines        346893     587813     +240920     
=================================================
+ Hits         249241     326813      +77572     
- Misses        77327     238312     +160985     
- Partials      20325      22688       +2363     

Flag	Coverage Δ
integration	36.8366% <ø> (?)
unit	70.2060% <ø> (-1.6436%)	⬇️

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

Components	Coverage Δ
dumpling	54.0269% <ø> (-2.2860%)	⬇️
parser	∅ <ø> (∅)
br	55.6081% <ø> (+4.2719%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, tangenta

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-01-11 03:34:50.636917214 +0000 UTC m=+500680.221170900: ☑️ agreed by tangenta.
• 2024-01-11 03:42:50.889790505 +0000 UTC m=+501160.474044192: ☑️ agreed by Defined2014.

[Defined2014]

/test mysql-test

[tiprow]

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In response to this:

/test mysql-test

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[tiprow]

@zimulala: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
tiprow_fast_test	af8ddd6	link	true	/test tiprow_fast_test

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