planner: avoid slicesgrow in the buildDataSource

[hawkingrei]

What problem does this PR solve?

Issue Number: close #58842

Problem Summary:

What changed and how does it work?

tidb/pkg/planner/core/logical_plan_builder.go

Lines 4648 to 4658 in cd9d3c0

	extraCol := ds.NewExtraHandleSchemaCol()
	handleCols = util.NewIntHandleCols(extraCol)
	ds.Columns = append(ds.Columns, model.NewExtraHandleColInfo())
	schema.Append(extraCol)
	names = append(names, &types.FieldName{
	DBName: dbName,
	TblName: tableInfo.Name,
	ColName: model.ExtraHandleName,
	OrigColName: model.ExtraHandleName,
	})
	ds.TblCols = append(ds.TblCols, extraCol)

here is the root causion of the slices grow. so we should add 1 to the capacity of column

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

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.5271%. Comparing base (d9dc3f4) to head (f6dc16a).
Report is 4 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #58853        +/-   ##
================================================
+ Coverage   73.1123%   73.5271%   +0.4147%     
================================================
  Files          1677       1677                
  Lines        463901     463962        +61     
================================================
+ Hits         339169     341138      +1969     
+ Misses       103885     101972      -1913     
- Partials      20847      20852         +5     

Flag	Coverage Δ
integration	42.8314% <100.0000%> (?)
unit	72.2970% <100.0000%> (-0.0020%)	⬇️

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

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	45.7509% <ø> (+0.0209%)	⬆️

[ti-chi-bot]

@hawkingrei: 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
idc-jenkins-ci-tidb/check_dev_2	f6dc16a	link	true	/test check-dev2

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