promote 25.4.10 to LTS

[taroface]

Relates to https://cockroachlabs.atlassian.net/browse/REL-3342

Updated release note: https://deploy-preview-23275--cockroachdb-docs.netlify.app/docs/releases/v25.4.html#v25-4-10-general-changes
Updated support table: https://deploy-preview-23275--cockroachdb-docs.netlify.app/docs/releases/release-support-policy#supported-versions

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[github-actions]

Files changed:

• src/current/_data/versions.csv
• src/current/_includes/releases/v25.4/v25.4.10.md:
  • releases/v25.4.md

[github-actions]

Branch Existence Check: Failed

Found 6 issue(s) in versions.csv:

Context: EDUENG-614

• ❌ v1.0: crdb_branch_name='release-1.0' does not exist in cockroachdb/generated-diagrams.
• ❌ v1.1: crdb_branch_name='release-1.1' does not exist in cockroachdb/generated-diagrams.
• ❌ v2.0: crdb_branch_name='release-2.0' does not exist in cockroachdb/generated-diagrams.
• ❌ v2.1: crdb_branch_name='release-2.1' does not exist in cockroachdb/generated-diagrams.
• ❌ v19.1: crdb_branch_name='release-19.1' does not exist in cockroachdb/generated-diagrams.
• ❌ v19.2: crdb_branch_name='release-19.2' does not exist in cockroachdb/generated-diagrams.

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[jhlodin]

LGTM