change the render config of pipeline

[yanOO1497]

RT
Reply: cocos/3d-tasks#18454

Greptile Summary

This pull request modifies the render pipeline configuration in the engine features, introducing a more structured approach to pipeline selection.

• Added new 'render-pipeline' feature in /editor/engine-features/render-config.json with 'custom-pipeline' and 'legacy-pipeline' options
• Removed 'custom-pipeline-post-process' feature from the configuration
• Set 'custom-pipeline' as the default option for the render pipeline
• Categorized 'render-pipeline' under "graphics" and marked it as required and hidden
• Ensured compatibility with existing schema and TypeScript definitions in schema.json and types.ts

[greptile-apps]

LGTM

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[github-actions]

Interface Check Report

This pull request does not change any public interfaces !