Pipeline: refactor the extra time calculation in explain analyze (#8987)

[ti-chi-bot]

This is an automated cherry-pick of #8987

What problem does this PR solve?

Issue Number: close #8962

Problem Summary:

What is changed and how it works?

1. refactor the wait_for_notify_time of operator by introducing PipelineExec::wait_for_notify and use Operator::notify to collect the waiting_for_notify time
   • https://github.com/pingcap/tiflash/pull/8987/files#diff-68e8dfc992ba63ffeaedd322ae1bfe6bca44ae4c956ba1282867b7614e788329R85-R86
2. Distribute the pending time evenly across all operators.
   • https://github.com/pingcap/tiflash/pull/8987/files#diff-a7b6eedea6a22bde873ef0ae99758bdf002ff1cf8a9bbd5484e099f52426dcf8R237
3. add exec_context.getQueryProfileInfo().toJson() to mpp tracing log
   • https://github.com/pingcap/tiflash/pull/8987/files#diff-df51a1914408d0806de40ec9912b4be61d513cf3fd71e94761923646e89acefdR117

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

None

[windtalker]

@SeaRise can you help confirm if it is safe to cherry pick this pr to release-8.1 branch?

[SeaRise]

/cc @SeaRise

[ti-chi-bot]

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[SeaRise]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JaySon-Huang, SeaRise

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-21 07:11:23.605351061 +0000 UTC m=+335878.739801172: ☑️ agreed by JaySon-Huang.
• 2024-08-22 06:43:35.885269881 +0000 UTC m=+420611.019720003: ☑️ agreed by SeaRise.

[windtalker]

/run-all-tests

[windtalker]

/rebuild