[Docs] Document Symfony without WordPress in Blueprint examples

[adamziel]

What it does

Adds a Symfony example to the Blueprint examples page showing preferredVersions.wp: false and a PHP-only Symfony app loaded from the Blueprints gallery.

The Symfony app files and Blueprint JSON no longer live in this repository. The example points at the canonical Blueprint in WordPress/blueprints, where the source/rebuild instructions were added in WordPress/blueprints#208.

Implementation

• Teaches BlueprintExample/BlueprintRunButton how to render a remote blueprintUrl.
• Uses the merged Blueprints repo URL for the Symfony example instead of duplicating the Blueprint JSON in Playground docs.
• Refreshes the Symfony ZIP cache key in the PHP frameworks guide so it picks up the rebuilt Blueprints ZIP that uses the published wp-php-toolkit/html Composer package.
• Rebases on trunk, which already includes the newer /guides/php-frameworks page from [Docs] Document Symfony apps in Playground without WordPress #3766.

Testing

npm exec nx run docs-site:check-orphan-pages
npm exec nx run docs-site:lint
npm exec nx run docs-site:build

docs-site:build passed and printed the existing Docusaurus broken-anchor warnings for unrelated localized docs pages.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds documentation and component support for running Blueprints from a remote Blueprint URL (highlighted via a Symfony “without WordPress” example), and refreshes the Symfony ZIP cache-busting key used in the PHP frameworks guide.

Changes:

• Extend BlueprintRunButton/BlueprintExample to accept and render a blueprintUrl in addition to embedded Blueprint JSON.
• Update the Blueprints examples docs to include a Symfony (WP-less) example that references the canonical remote Blueprint.
• Refresh the Symfony ZIP URL cache key in the PHP frameworks guide.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
packages/docs/site/src/components/Blueprints/BlueprintRunButton.tsx	Adds support for launching Playground with a remote blueprintUrl query parameter.
packages/docs/site/src/components/Blueprints/BlueprintExample.mdx	Renders either Blueprint JSON or a remote URL, and passes blueprintUrl through to the run button.
packages/docs/site/docs/main/guides/php-frameworks.md	Updates Symfony ZIP URL version string to bust cache for rebuilt artifact.
packages/docs/site/docs/blueprints/08-examples.md	Adds a Symfony “Run without WordPress” example using a remote Blueprint URL.

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