EDU-18161/18154/18162: restore signal in tests-summary PR comment (Phase 1) - #1249

Changed pages include:

• index.html - view
• 404.html - view
• 500.html - view
• en.html - view
• search.html - view
• docs/api-reference.html - view
• docs/app-development.html - view
• docs/guides.html - view
• docs/storefront-development.html - view
• docs/troubleshooting.html - view

There are more changes not included in the list