infoschema: avoid growslices in the infoSchema.SchemaTables

[hawkingrei]

What problem does this PR solve?

Issue Number: close #54021

Problem Summary:

What changed and how does it work?

(*infoSchema).SchemaTables take too many time on growslics

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

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 50.3227%. Comparing base (f713512) to head (2b8d78c).

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #54023         +/-   ##
=================================================
- Coverage   74.4712%   50.3227%   -24.1485%     
=================================================
  Files          1508       1628        +120     
  Lines        358501     599944     +241443     
=================================================
+ Hits         266980     301908      +34928     
- Misses        72085     275073     +202988     
- Partials      19436      22963       +3527     

Flag	Coverage Δ
integration	21.7974% <75.0000%> (?)

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

Components	Coverage Δ
dumpling	55.1994% <ø> (ø)
parser	∅ <ø> (∅)
br	46.7635% <ø> (+2.8950%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• pkg/infoschema/OWNERS [D3Hunter,ywqzzy]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-06-14 04:14:40.225605905 +0000 UTC m=+697234.278917828: ☑️ agreed by ywqzzy.
• 2024-06-14 04:29:44.30076316 +0000 UTC m=+698138.354075084: ☑️ agreed by D3Hunter.