planner: do not convert update to point get if the expr has sub-query (#47454)

[ti-chi-bot]

This is an automated cherry-pick of #47454

What problem does this PR solve?

Issue Number: close #47445

Problem Summary:

What is changed and how it works?

• do not convert update to point get if the expr has sub-query
  • covered the case expr
  • covered the parentheses case expr
  • covered the parentheses sub-query expr
  • covered the sub-query expr (do we really need this? I copied the code from the old code)

Check List

Tests

• Unit test
• Integration test
• Manual test
• 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.

Fixed TiDB incorrectly converts update statement to point get plan issue

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [hawkingrei,qw4990]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-10-30 10:07:22.244784151 +0000 UTC m=+2861239.831894281: ☑️ agreed by qw4990.
• 2023-10-30 10:07:59.110804838 +0000 UTC m=+2861276.697914983: ☑️ agreed by hawkingrei.

[hawkingrei]

/retest