server: support dumpPartitionStats param for statsHandler

[Yisaer]

Signed-off-by: yisaer disxiaofei@163.com

What problem does this PR solve?

Issue Number: ref #37977

Problem Summary:

What is changed and how it works?

Introduce dumpPartitionStats for statsHandler (default true), if it was false, only global stats will be dumped of partition tables in dynamic mode.

Check List

Tests

• Unit test

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• qw4990
• xuyifangreeneyes

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[xuyifangreeneyes]

rest LGTM

[Yisaer]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 42a151f

[sre-bot]

TiDB MergeCI notify

✅ Well Done! New fixed [2] after this pr merged.

CI Name	Result	Duration	Compare with Parent commit
idc-jenkins-ci-tidb/integration-ddl-test	🔴 failed 1, success 5, total 6	5 min 3 sec	Existing failure
idc-jenkins-ci-tidb/integration-common-test	✅ all 17 tests passed	17 min	Fixed
idc-jenkins-ci-tidb/sqllogic-test-1	✅ all 26 tests passed	4 min 10 sec	Fixed
idc-jenkins-ci/integration-cdc-test	🟢 all 38 tests passed	21 min	Existing passed
idc-jenkins-ci-tidb/common-test	🟢 all 11 tests passed	13 min	Existing passed
idc-jenkins-ci-tidb/tics-test	🟢 all 1 tests passed	6 min 10 sec	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-2	🟢 all 28 tests passed	5 min 52 sec	Existing passed
idc-jenkins-ci-tidb/mybatis-test	🟢 all 1 tests passed	3 min 11 sec	Existing passed
idc-jenkins-ci-tidb/integration-compatibility-test	🟢 all 1 tests passed	3 min 0 sec	Existing passed
idc-jenkins-ci-tidb/plugin-test	🟢 build success, plugin test success	4min	Existing passed