unistore: Adjust some behaviors to be consistent with TiKV (#43397)

[ti-chi-bot]

This is an automated cherry-pick of #43397

What problem does this PR solve?

Issue Number: ref #42937
ref #43243

Problem Summary:

What is changed and how it works?

Follows some latest behavior changes to TiKV:

• Supports CheckTxnStatus verifying primary
  • However the change to TiKV has not been merged yet (txn: Check whether the primary matches when handling check_txn_status requests tikv/tikv#14637)
• Commit rollbacks pessimistic locks

And fixes some existing incorrect behaviors:

• ScanLock return complete lock info
• Commit do not omit Lock records Removing this change from this PR due to too many problems in the current implementation of unistore.

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]

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[ti-chi-bot]

@ti-chi-bot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
idc-jenkins-ci-tidb/build	f8af151	link	true	/test build
idc-jenkins-ci-tidb/check_dev_2	f8af151	link	true	/test check-dev2
idc-jenkins-ci-tidb/unit-test	f8af151	link	true	/test unit-test
idc-jenkins-ci-tidb/check_dev	f8af151	link	true	/test check-dev
idc-jenkins-ci-tidb/mysql-test	f8af151	link	true	/test mysql-test

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[ti-chi-bot]

This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

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AFTER it has been approved by collaborators, please ping the release team in a comment to request a cherry pick review.

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