fix(charts): return notFound for invalid catalog collection IDs

[sentry]

Pre-validate params.collectionId in the charts catalog collection route loader using isChartsCatalogCaseId and throw notFound() before calling getChartsCatalogCollection. This prevents malformed IDs (such as requests ending in .md, like shadcn.md) from triggering an unhandled Valibot schema validation exception from the server function validator.

Fixes TANSTACK-COM-5AH

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	tanstack-com	379f8ab	Oct 13 2026, 11:19 PM