table: standalone implement for table.MutateContext and table.AllocatorContext

[lcwangchao]

What problem does this PR solve?

Issue Number: close #51259

What changed and how does it work?

We have introduced a standalone implement for PlanContext in #51237. In this PR, we continue to decouple the implement of table.MutateContext with session. After this PR, sessionctx.Context does not need to declare all methods in MutateContext and it exposes a new method GetTableContext to return the table context.

A new package pkg/table/contextimpl is introduced to implement its own methods in MutateContext.

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

Merging #51262 (4d8d432) into master (5b187e5) will decrease coverage by 15.8518%.
Report is 5 commits behind head on master.
The diff coverage is 92.6829%.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #51262         +/-   ##
=================================================
- Coverage   70.7007%   54.8490%   -15.8518%     
=================================================
  Files          1457       1568        +111     
  Lines        433745     602802     +169057     
=================================================
+ Hits         306661     330631      +23970     
- Misses       107895     249167     +141272     
- Partials      19189      23004       +3815     

Flag	Coverage Δ
integration	36.9461% <69.5122%> (?)
unit	70.3613% <91.4634%> (-0.1345%)	⬇️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	51.3481% <100.0000%> (+5.4715%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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Needs approval from an approver in each of these files:

• OWNERS [lance6716,tangenta]
• br/pkg/lightning/OWNERS [lance6716]
• pkg/ddl/OWNERS [tangenta]
• pkg/executor/importer/OWNERS [lance6716]
• pkg/table/OWNERS [tangenta]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-02-23 06:09:37.282619626 +0000 UTC m=+596666.030242735: ☑️ agreed by tangenta.
• 2024-02-23 06:50:08.536672416 +0000 UTC m=+599097.284295527: ☑️ agreed by lance6716.