fix(server): skip stacked assets in duplicate detection (#16380)

* skip stacked assets in duplicate detection

* update sql

* handle stacking after duplicate detection runs

server/src/repositories/search.repository.ts

@@ -318,6 +318,7 @@ export class SearchRepository {
           .where('assets.isVisible', '=', true)
           .where('assets.type', '=', type)
           .where('assets.id', '!=', asUuid(assetId))
+          .where('assets.stackId', 'is', null)
           .orderBy(sql`smart_search.embedding <=> ${embedding}`)
           .limit(64),
       )