[rvpatel]

WP_Site_Health::get_test_insecure_registration() set the label for its critical result as the default, so a site with safe registration settings listed "Open Registration with privileged default role" under Passed tests, which reads like a warning.

• The passing result now reads "New users are not given a privileged role".
• The critical result sets its own label, "Open registration with a privileged default role", in sentence case like other Site Health labels.
• The critical description is wrapped in <p>, like the passing description and other Site Health results.
• Adds the first tests for this check: each combination of open or closed registration and default role, plus the label, description markup and action link. On multisite, the tests set the network registration option, because users_can_register follows it there.

Two translatable strings change; 7.2 is in beta, before the RC1 string freeze.

Trac ticket: https://core.trac.wordpress.org/ticket/66359

Testing Instructions

1. Keep "Anyone can register" unticked, or tick it with the default role set to Subscriber.
2. Go to Tools > Site Health and expand "Passed tests".
3. Before: "Open Registration with privileged default role". After: "New users are not given a privileged role".
4. Tick "Anyone can register" and set the default role to Administrator. The critical result reads "Open registration with a privileged default role".

Unit tests: npm run test:php -- --group 66359. On trunk, the label and markup tests fail; with this PR, all 9 pass on single site and multisite.

Use of AI Tools

AI assistance: Yes
Tool(s): Claude Code
Used for: Finding the issue during 7.2-beta1 testing, and drafting the fix, tests and this description. I reviewed the changes and ran the tests.

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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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