fix(core-shared): satisfy strict typecheck in purge job + audit hook

The hoisted applyAction closure loses the collection narrowing (TS18048)
and apps with generated CollectionSlug unions reject comparing slugs to
'audit-logs' (TS2367). Re-bind the narrowed collection and widen the
slug comparison to string.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/core-audit/src/hooks/audit-erasure-hook.ts

@@ -58,8 +58,10 @@ export function createReqScopedAuditErasureHook(
   return async ({ doc, req }) => {
     if (typeof doc.id !== "string" && typeof doc.id !== "number") return;
     const payload = req.payload;
+    // `slug as string`: apps with generated CollectionSlug types narrow slug
+    // to their registered union, which need not include "audit-logs".
     const hasAuditCollection = payload.config.collections?.some(
-      (c) => c.slug === "audit-logs",
+      (c) => (c.slug as string) === "audit-logs",
     );
     if (!hasAuditCollection) return;
     const auditLog = new PayloadAuditLog(