i18n(ja): fix state/executions/plans mistranslated as unrelated homonyms

[yahonda]

What is changed, added or deleted? (Required)

Found while investigating a similar defect reported on PR #23635 (DM-worker's "state" mistranslated as 州, the word for a US state/province). A corpus-wide search turned up the same false-friend pattern (an English word, or a literal system/UI value, mistranslated using an unrelated homonym or an unnecessary Japanese rendering) in several files:

"state" mistranslated as 州 (province):

• ticdc/ticdc-open-api.md, ticdc/ticdc-open-api-v2.md: "the current state of the replication task" — corrected the mistranslation and a stray duplicated 状態.
• tidb-cloud/essential-changefeed-overview.md: "The states are described as follows".

"execution" mistranslated as 処刑 (capital punishment):

• sql-statements/sql-statement-show-backups.md: Wait | Waiting for execution.
• tidb-cloud/top-ru.md: the Executions column, in both of the file's two RU tables.

Literal UI/API/output values unnecessarily translated into Japanese (a user comparing the doc against actual product output would no longer find a match):

• sql-statements/sql-statement-show-backups.md: the State column's literal enum values (Backup/Wait/Checksum) had been translated into Japanese words; restored to the literal English values shown by SHOW BACKUPS.
• tidb-cloud/top-ru.md: both tables' "Column"/"Section" values (SQL Statement, Total RU, Mean RU, Share, Executions, Plans, Total latency, Mean latency, SQL Digest) are the literal column/section names shown in the TiDB Cloud dashboard; restored from their translated Japanese forms to the literal English names (the adjacent Plans column was also previously mistranslated as 予定, "a scheduled appointment").
• tidb-cloud/tidb-cloud-console-auditing.md: all 89 rows of the "Console audit event types" table had the literal event-type identifier (e.g. CreateOrganization, LoginOrganization, PauseCluster) translated into a Japanese descriptive phrase instead of being kept as the literal value that appears in actual console audit logs.
• ticdc/ticdc-canal-json.md: 5 of 14 literal Canal-JSON output field names (database, table, type, data, old, and the casing of sql) were translated instead of kept as the literal JSON keys a user parses from real TiCDC output.
• ticdc/ticdc-open-protocol.md: literal example JSON values in the column-value mapping table ("test", "key1"/"value1") had been translated into Japanese text inside the JSON example, which would no longer match real output.

All fixes verified against the English source on release-8.5.

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

• i18n-ja-release-8.5 (TiDB Japanese documentation for TiDB 8.5 versions)

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

• This PR is translated from:
• Other reference link(s): related to i18n(ja): restore DM-master and DM-worker as literal English terms #23635

AI agent involvement

• The changes in this PR were primarily made by an AI agent on behalf of the PR author.

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

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📥 Commits

Reviewing files that changed from the base of the PR and between 32de109 and 2950789.

📒 Files selected for processing (8)

• sql-statements/sql-statement-show-backups.md
• ticdc/ticdc-canal-json.md
• ticdc/ticdc-open-api-v2.md
• ticdc/ticdc-open-api.md
• ticdc/ticdc-open-protocol.md
• tidb-cloud/essential-changefeed-overview.md
• tidb-cloud/tidb-cloud-console-auditing.md
• tidb-cloud/top-ru.md

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Timeline:

• 2026-09-07 02:05:37.327228488 +0000 UTC m=+1676972.498322595: ☑️ agreed by qiancai.