feat(compaction): support trivial move multi ssts

[Li0k]

I hereby agree to the terms of the RisingWave Labs, Inc. Contributor License Agreement.

What's changed and what's your intention?

This PR improves the trival-move picker algorithm to support trivial-move tasks with multiple ssts.

• related to Enhance(compaction): Improving the efficiency of the trivial-move task #19530

Checklist

• I have written necessary rustdoc comments.
• I have added necessary unit tests and integration tests.
• I have added test labels as necessary.
• I have added fuzzing tests or opened an issue to track them.
• My PR contains breaking changes.
• My PR changes performance-critical code, so I will run (micro) benchmarks and present the results.
• My PR contains critical fixes that are necessary to be merged into the latest release.

Documentation

• My PR needs documentation updates.

Release note

[gru-agent]

This pull request has been modified. If you want me to regenerate unit test for any of the files related, please find the file in "Files Changed" tab and add a comment @gru-agent. (The github "Comment on this file" feature is in the upper right corner of each file in "Files Changed" tab.)

[Li0k]

Compaction Test q13

v2.2.0-rc.1:
[[https://grafana.test.risingwave-cloud.xyz/d/EpkBw5W4k/risingwave-dev-dashboard?orgId=1&var-da[…]var-pod=$__all&var-component=$__all&var-table=$__all](https://grafana.test.risingwave-cloud.xyz/d/EpkBw5W4k/risingwave-dev-dashboard?orgId=1&var-datasource=f2ad7358-1f42-73f7-8dc9-a4517433b212&from=2025-01-26T09:03:29.668Z&to=2025-01-26T09:56:31.064Z&var-namespace=compaction-test-20250126-090007&timezone=browser&var-instance=benchmark-risingwave&var-pod=$__all&var-component=$__all&var-table=$__all)](https://grafana.test.risingwave-cloud.xyz/d/EpkBw5W4k/risingwave-dev-dashboard?orgId=1&var-datasource=f2ad7358-1f42-73f7-8dc9-a4517433b212&from=2025-01-27T08:41:53.274Z&to=2025-01-27T09:44:49.136Z&var-namespace=compaction-test-20250127-083707&timezone=browser&var-instance=benchmark-risingwave&var-pod=$__all&var-component=$__all&var-table=$__all)

branch:
[https://grafana.test.risingwave-cloud.xyz/d/EpkBw5W4k/risingwave-dev-dashboard?from=2025-01-2[…]var-pod=$__all&var-component=$__all&var-table=$__all](https://grafana.test.risingwave-cloud.xyz/d/EpkBw5W4k/risingwave-dev-dashboard?orgId=1&var-datasource=f2ad7358-1f42-73f7-8dc9-a4517433b212&from=2025-01-27T04:17:37.780Z&to=2025-01-27T05:13:55.209Z&var-namespace=compaction-test-20250127-041331&timezone=browser&var-instance=benchmark-risingwave&var-pod=$__all&var-component=$__all&var-table=$__all)

• batch ssts

• delta log num

v2.2.0-rc.1

branch

• write stop

v2.2.0-rc.1

branch

• pending bytes

v2.2.0-rc.1

branch

• trivial-move count

v2.2.0-rc.1

branch

• meta cpu usage

v2.2.0-rc.1

branch

• source throughput

v2.2.0-rc.1

branch

The optimisation branch seems to have suffered from a more severe write-stop