Rebuild converter tag label spacing

[chubes4]

Summary

• Rebuilds the vendor-prefixed html-to-blocks-converter payload so the tag-label spacing fix from html-to-blocks-converter#347 is actually shipped by Block Format Bridge.

Testing

• composer install --no-interaction
• composer build
• homeboy lint --changed-since origin/main (blocked: local Homeboy registry reports extension.not_found for wordpress)
• homeboy test --changed-since origin/main (blocked: local Homeboy registry reports extension.not_found for wordpress)

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Vendor rebuild and PR preparation; Chris remains responsible for review and validation.