fix(audit): use actual deletedCount in bulk API key revoke description

The description was using keys.length (requested count) instead of
deletedCount (actual count), which could differ if some keys didn't
exist.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/app/api/workspaces/[id]/api-keys/route.ts

@@ -257,7 +257,7 @@ export async function DELETE(
       actorEmail: session?.user?.email,
       action: AuditAction.API_KEY_REVOKED,
       resourceType: AuditResourceType.API_KEY,
-      description: `Revoked ${keys.length} workspace API key(s)`,
+      description: `Revoked ${deletedCount} workspace API key(s)`,
       metadata: { keyIds: keys, deletedCount, keyType: 'workspace' },
       request,
     })