executor: refactor the BaseExecutor in IndexReaderExecutor

[YangKeao]

What problem does this PR solve?

Issue Number: close #53136

Previously, the IndexReaderExecutor depends on a whole session context.

Problem Summary:

What changed and how does it work?

This PR removes the BaseExecutor (which provides the method to access the whole session context) and use the BaseExecutorV2 instead, which is safe to be cloned. Also this PR adds a new indexReaderExecutorContext like the existing tableReaderExecutorContext, and use it to collect all fields needed by the

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.
    It should be covered by existing tests. Didn't change the code logic.

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

Attention: Patch coverage is 93.44262% with 4 lines in your changes missing coverage. Please review.

Project coverage is 74.6316%. Comparing base (788d505) to head (200f5c5).
Report is 541 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #53138        +/-   ##
================================================
+ Coverage   74.4098%   74.6316%   +0.2218%     
================================================
  Files          1490       1491         +1     
  Lines        356051     432634     +76583     
================================================
+ Hits         264937     322882     +57945     
- Misses        71835      89784     +17949     
- Partials      19279      19968       +689     

Flag	Coverage Δ
integration	49.0721% <91.8032%> (?)
unit	71.2431% <93.4426%> (-1.9293%)	⬇️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (-2.3014%)	⬇️
parser	∅ <ø> (∅)
br	50.3020% <ø> (+7.4135%)	⬆️

[YangKeao]

/retest

[ti-chi-bot]

PR needs rebase.

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