lightning: skip check if PD returns zero StoreInfo

[lance6716]

What problem does this PR solve?

Issue Number: close #49743

Problem Summary:

What changed and how does it work?

Check List

Tests

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

  recover the old logic which is mistakenly delete before: below code is from v7.5

tidb/br/pkg/lightning/backend/local/local.go

Lines 1420 to 1426 in 069631e

	if store.Status.Capacity > 0 {
	// The available disk percent of TiKV
	ratio := store.Status.Available * 100 / store.Status.Capacity
	if ratio < 10 {
	return errors.Errorf("the remaining storage capacity of TiKV(%s) is less than 10%%; please increase the storage capacity of TiKV and try again", store.Store.Address)
	}
	}

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 @lance6716. Thanks for your PR.

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[lance6716]

/cc @D3Hunter

[codecov]

Codecov Report

Merging #49861 (0306cec) into master (ed291b8) will increase coverage by 0.3873%.
Report is 5 commits behind head on master.
The diff coverage is 0.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #49861        +/-   ##
================================================
+ Coverage   70.9362%   71.3236%   +0.3873%     
================================================
  Files          1368       1430        +62     
  Lines        396054     415740     +19686     
================================================
+ Hits         280946     296521     +15575     
- Misses        95443     100423      +4980     
+ Partials      19665      18796       -869     

Flag	Coverage Δ
integration	43.8059% <0.0000%> (?)
unit	70.9362% <ø> (ø)

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

Components	Coverage Δ
dumpling	53.9663% <ø> (ø)
parser	∅ <ø> (∅)
br	47.1758% <0.0000%> (-5.7026%)	⬇️

[Benjamin2037]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, D3Hunter

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• br/pkg/lightning/OWNERS [Benjamin2037,D3Hunter]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-12-28 05:29:39.298789283 +0000 UTC m=+1716470.336016387: ☑️ agreed by Benjamin2037.
• 2023-12-28 05:30:59.171082096 +0000 UTC m=+1716550.208309024: ☑️ agreed by D3Hunter.