server: Fix compression protocol for larger packets | tidb-test=pr/2227 (#47495)

[ti-chi-bot]

This is an automated cherry-pick of #47495

What problem does this PR solve?

Issue Number: close #47152

All issues fixed by this PR:

• close Load data with --compress=true fails #47152
• close Send huge SQL with --compress=true fails #47157
• close Querying huge data with useCompress=true fails #47161

Problem Summary:

What is changed and how it works?

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.

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.

A bug in the handling of the compressed protocol for larger payloads (>=16M) has been fixed

[ti-chi-bot]

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

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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	be1d607	link	true	/test build
idc-jenkins-ci-tidb/check_dev	be1d607	link	true	/test check-dev
idc-jenkins-ci-tidb/unit-test	be1d607	link	true	/test unit-test
idc-jenkins-ci-tidb/mysql-test	be1d607	link	true	/test mysql-test

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[dveeden]

Closing as this does not affect release-7.1