[ArkaPrabhaChowdhury]

See https://core.trac.wordpress.org/ticket/66633

Summary

Generate hash-based element classes and scope their counters to the innermost Query block. This keeps styles on markup outside client-side pagination stable while retaining unique classes for duplicate blocks.

Testing

• rtk proxy php C:\Users\arkop\wordpress-develop\vendor\phpunit\phpunit\phpunit --configuration phpunit.xml.dist tests/phpunit/tests/block-supports/wpRenderElementsSupport.php (16 tests, 23 assertions)
• rtk proxy php C:\Users\arkop\wordpress-develop\vendor\phpunit\phpunit\phpunit --configuration phpunit.xml.dist tests/phpunit/tests/block-supports/wpRenderElementsSupportStyles.php (9 tests, 10 assertions)
• PHPCBF on the three changed PHP files; PHPCS reported no violations.

Use of AI Tools

AI assistance: Yes
Tool(s): Codex
Model(s): GPT-6
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Trac ticket:

Use of AI Tools

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This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

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