planner, expression: fix TableFullScan caused by extraHandleId not correctly found (#45139)

[ti-chi-bot]

This is an automated cherry-pick of #45139

What problem does this PR solve?

Issue Number: close #45036

Problem Summary:
Fix the wrong logic to get extraHandleId. And this part needs further refactoring.

What is changed and how it works?

Check List

Tests

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

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

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, qw4990

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-08-16 12:46:40.2235065 +0000 UTC m=+721564.772522487: ☑️ agreed by qw4990.
• 2023-08-16 12:46:55.040052465 +0000 UTC m=+721579.589068437: ☑️ agreed by hawkingrei.

[qw4990]

/test mysql-test

[tiprow]

@qw4990: No presubmit jobs available for pingcap/tidb@release-6.5

In response to this:

/test mysql-test

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5@1d77dfd). Click here to learn what that means.
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Additional details and impacted files

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