Add TiDB 8.5.2 Release Notes

[hfxsd]

First-time contributors' checklist

• I've signed Contributor License Agreement that's required for repo owners to accept my contribution.

What is changed, added or deleted? (Required)

Which TiDB version(s) do your changes apply to? (Required)

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions.

• master (the latest development version)
• v9.0 (TiDB 9.0 versions)
• v8.5 (TiDB 8.5 versions)
• v8.4 (TiDB 8.4 versions)
• v8.3 (TiDB 8.3 versions)
• v8.1 (TiDB 8.1 versions)
• v7.5 (TiDB 7.5 versions)
• v7.1 (TiDB 7.1 versions)
• v6.5 (TiDB 6.5 versions)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)

What is the related PR or file link(s)?

• This PR is translated from:Add TiDB 8.5.2 Release Notes docs-cn#20251
• Other reference link(s):

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

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[gemini-code-assist]

Hello @hfxsd, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

This pull request creates the release notes for TiDB version 8.5.2. The release notes document compatibility changes, improvements, and bug fixes across various TiDB components, including TiDB, TiKV, PD, TiFlash, and various tools like BR, TiCDC, DM, TiDB Lightning, Dumpling, and TiUP. Many of the listed improvements and bug fixes are duplicates from previous release notes, indicating backports or continued relevance of those changes.

Highlights

• Compatibility Changes: Documents any compatibility changes introduced in TiDB 8.5.2.
• Improvements: Lists improvements made to TiDB, TiKV, PD, TiFlash, and tools like BR, TiCDC, DM, TiDB Lightning, Dumpling, and TiUP.
• Bug Fixes: Details bug fixes in TiDB, TiKV, PD, TiFlash, and tools, including duplicate fixes from prior releases.

Changelog

• releases/release-8.5.2.md
  • Creates the initial release notes document for TiDB 8.5.2.
  • Adds sections for compatibility changes, improvements, and bug fixes.
  • Includes notes and links to related issues for each change.
  • Includes duplicate entries from prior releases.

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[Oreoxmt]

Suggested change

	- Fix the issue that TiFlash might print a large number of `unknown enum` logs in a disaggregated storage and compute architecture [#9955](https://github.com/pingcap/tiflash/issues/9955) @[JaySon-Huang](https://github.com/JaySon-Huang)
	- Fix the issue that TiFlash might print a large number of `tag=EnumParseOverflowContainer` logs in a disaggregated storage and compute architecture [#9955](https://github.com/pingcap/tiflash/issues/9955) @[JaySon-Huang](https://github.com/JaySon-Huang)