i18n(ja): fix partial negations rendered as full negations

[yahonda]

What is changed, added or deleted? (Required)

Machine translation rendered several English partial negations as unqualified Japanese negations, which inverts the meaning.

EN: TiDB does not support all MySQL character sets.
JA: TiDBはMySQLのすべての文字セットをサポートしていません。          <- reads: supports none
->  TiDBはMySQLのすべての文字セットをサポートしているわけではありません。

EN: However, this method is not fully accurate, ...
JA: この方法は完全に正確ではありません。                              <- reads: not accurate at all
->  この方法は完全には正確ではありません。

The fix scopes the negation with は (完全には) or 〜わけではありません, changing as few characters as possible.

17 lines across 14 files. Each was verified against the English source on release-8.5 — only lines whose English is unambiguously a partial negation ("not fully", "not all", "not totally", "cannot cover all") were changed.

How they were found: swept the ja branch for 完全に〜ない / 常に〜ない / すべて〜ない, then cross-checked every hit against the English original. 79 candidates were examined; 62 turned out to be genuine full negations in English and were left untouched.

The remaining 完全に正確ではありません in ai/reference/vector-search-index.md is fixed in #23274 instead, since that line is already edited there.

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

• master (the latest development version)
• v8.5 (TiDB 8.5 versions)
• v8.4 (TiDB 8.4 versions)
• v8.3 (TiDB 8.3 versions)
• v8.2 (TiDB 8.2 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)
• v5.3 (TiDB 5.3 versions)

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

• This PR is translated from: N/A (Japanese-only accuracy fix)
• Other reference link(s): sibling ja PRs i18n(ja): add missing object-marker particle (wo) before code-span transitive verbs #23272 i18n(ja): add missing particle after Markdown links (wo before verbs, wa for subject) #23273 i18n(ja): miscellaneous review fixes (bit-shift description) #23274 i18n(ja): remove stray digits inserted before code spans #23275 i18n(ja): standardize the "Data Service" product name (データサービス → Data Service) #23291 i18n(ja): restore admonition labels to English (Note/Warning/Tip) #23292 i18n(ja): fix trailing "page number" typo after page reference links #23294 i18n(ja): restore variable names and clean up heading anchors in system variable docs #23295 i18n(ja): unify "plan cache" katakana term (remove stray space) in sql-prepared-plan-cache.md #23297

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

Note on scope

A few of the lines in this PR also carry a fix that belongs to one of the sibling ja PRs. Where a later sweep found damage on a line this PR already edits, the fix was applied here rather than duplicated into another PR — otherwise the two PRs would conflict. So a small number of lines go beyond the scope stated above, for example:

-…発生します。1パラメータ`gc.max_write_bytes_per_sec`使用すると、…
+…発生します。`gc.max_write_bytes_per_sec`パラメータを使用すると、…

Here the stray 1 (a translation-tool placeholder) and the word order were repaired alongside this PR's particle insertion.

All fifteen ja PRs were verified to merge cleanly in any order (105 pairwise merges, 0 conflicts).

[ti-chi-bot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: ce47d1bb-3593-429f-8a40-bf862caa3012

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign lilin90 for approval. For more information see the Code Review Process.
Please ensure that each of them provides their approval before proceeding.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment