master: cherry-pick common doc changes from #22744 (cloud: update docs for one console) to master

[qiancai]

What is changed, added or deleted? (Required)

• Cherry-picks the doc updates outside the /cloud folder from #22744 onto master.
• Brings the My TiDB page updates, instance and resource terminology updates, recycle bin wording changes, combo box wording changes, and related TiDB Cloud doc updates from the original PR into this branch.

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

• master (the latest development version)
• v9.0 (TiDB 9.0 versions)
• v8.5 (TiDB 8.5 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:
• Other reference link(s):
  • cloud: update docs for one console #22744

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

How has this PR been validated?

• Ran ./scripts/markdownlint on the Markdown files changed by this cherry-pick.

[gemini-code-assist]

Code Review

This pull request updates documentation across numerous files to reflect UI changes in the TiDB Cloud console, standardizing the use of 'instance' and the {{{ .starter }}} placeholder while updating navigation paths to 'My TiDB'. The review feedback focuses on improving consistency by using the {{{ .essential }}} placeholder instead of literal text and ensuring uniform tier mentions across all files. Additionally, several minor grammatical corrections were provided to enhance the overall quality of the documentation.

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2026-04-22 05:16:21.038773685 +0000 UTC m=+2142986.244133732: ☑️ agreed by hfxsd.

[qiancai]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiancai

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• OWNERS [qiancai]

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[ti-chi-bot]

@qiancai: You cannot manually add or delete the cherry pick approval state labels, only I and the tursted members have permission to do so. You can approve it in internal platform.

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