[i18n] Add Bengali translation for blueprints resources and steps

[perashanid]

Motivation for the change, related issues

Continuing Bengali translation efforts for WordPress Playground documentation. This PR adds Bengali translations for four more blueprint documentation pages covering resources, steps, and bundles.

Implementation details

Translated the following files to Bengali:

• 04-resources.md - Blueprint resources (URL, Git, Core themes/plugins, VFS, Literal, Bundled references)
• 05-steps-shorthands.md - Blueprint steps shorthands (login, plugins, siteOptions, defineWpConfigConsts)
• 05-steps.md - Blueprint steps (main API reference for all available step types)
• 06-bundles.md - Blueprint bundles (self-contained packages with blueprint.json and resources)

All translations:

• Maintain the original structure and formatting
• Preserve all code examples, TypeScript definitions, and technical terms
• Use accurate Bengali terminology for technical concepts
• Keep all import statements and interactive components functional

Testing Instructions (or ideally a Blueprint)

1. Navigate to the Bengali documentation site when deployed
2. Verify the translated pages render correctly
3. Check that all code examples and TypeScript definitions display properly
4. Confirm Bengali text displays properly with correct Unicode characters
5. Test that all internal links work correctly

[Copilot]

Pull request overview

Adds Bengali (bn) translations for additional WordPress Playground Blueprint documentation pages (resources, steps, shorthands, bundles) while preserving existing structure and embedded MDX components.

Changes:

• Added Bengali translation page for Blueprint resource references
• Added Bengali translation pages for Blueprint steps and step shorthands (including MDX components)
• Added Bengali translation page for Blueprint bundles (usage + examples)

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
packages/docs/site/i18n/bn/docusaurus-plugin-content-docs/current/blueprints/04-resources.md	Bengali translation for resource reference docs (URL/Git/Core/VFS/Literal/Bundled)
packages/docs/site/i18n/bn/docusaurus-plugin-content-docs/current/blueprints/05-steps.md	Bengali translation for steps reference page, including dynamic step rendering components
packages/docs/site/i18n/bn/docusaurus-plugin-content-docs/current/blueprints/05-steps-shorthands.md	Bengali translation for shorthand syntax reference page
packages/docs/site/i18n/bn/docusaurus-plugin-content-docs/current/blueprints/06-bundles.md	Bengali translation for bundles overview and usage examples

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