fix(vtex): check for :slug prefix instead of just : in PDP loaders

[guitavano]

Summary

• Fix slug prefix check from startsWith(":") to startsWith(":slug") in both intelligent search and legacy PDP loaders
• The previous check was too broad, matching any string starting with : instead of the specific :slug placeholder

Test plan

• Verify PDP pages load correctly with valid slugs
• Verify fallback to PDPDefaultPath triggers only when slug is the :slug placeholder

🤖 Generated with Claude Code

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Summary by cubic

Fix PDP slug placeholder detection by checking for ':slug' instead of any ':' in both intelligent search and legacy loaders. Prevents unnecessary fallback to PDPDefaultPath for valid slugs so PDP pages resolve correctly.

^{Written for commit c666565. Summary will update on new commits.}

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 1b56e757-541f-44e0-82fe-0de8856f0ab1

📥 Commits

Reviewing files that changed from the base of the PR and between b562530 and c666565.

📒 Files selected for processing (2)

• vtex/loaders/intelligentSearch/productDetailsPage.ts
• vtex/loaders/legacy/productDetailsPage.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/pdp-check-slug-prefix

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[github-actions]

Tagging Options

Should a new tag be published when this PR is merged?

• 👍 for Patch 0.159.2 update
• 🎉 for Minor 0.160.0 update
• 🚀 for Major 1.0.0 update

[cubic-dev-ai]

No issues found across 2 files

_{Re-trigger cubic}