session: fix bootstrap panic when upgrading to master (#56517)

[ti-chi-bot]

This is an automated cherry-pick of #56517

What problem does this PR solve?

Issue Number: close #56489

Problem Summary:

What changed and how does it work?

ctx is nil and it panic here:

tidb/pkg/infoschema/infoschema_v2.go

Lines 625 to 627 in 1eb0c8c

	if opt := ctx.Value(refillOptionKey); opt != nil {
	refill = opt.(bool)
	}

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

Follow the upgrade steps described in the issue

• 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

[codecov]

Codecov Report

Attention: Patch coverage is 88.23529% with 2 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.4@8516d55). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.4     #56616   +/-   ##
================================================
  Coverage               ?   56.2198%           
================================================
  Files                  ?       1751           
  Lines                  ?     628051           
  Branches               ?          0           
================================================
  Hits                   ?     353089           
  Misses                 ?     251071           
  Partials               ?      23891           

Flag	Coverage Δ
integration	36.8418% <82.3529%> (?)
unit	72.4790% <88.2352%> (?)

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

Components	Coverage Δ
dumpling	52.9478% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	52.3902% <0.0000%> (?)

[tiancaiamao]

/test check-dev2

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[tiancaiamao]

/test check-dev2

[tiprow]

@tiancaiamao: No presubmit jobs available for pingcap/[email protected]

In response to this:

/test check-dev2

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lance6716, yudongusa

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Needs approval from an approver in each of these files:

• OWNERS [lance6716]
• pkg/session/OWNERS [yudongusa]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-12 09:20:53.23218284 +0000 UTC m=+90050.381092664: ☑️ agreed by lance6716.
• 2024-10-14 02:50:08.848991041 +0000 UTC m=+239405.997900873: ☑️ agreed by yudongusa.