Fix array corruption in profile enrichment setQueryData

The spread operator {...data} converts arrays into plain objects
({0: item, 1: item, ...}) which breaks .map() calls on query data
like pinnedFeedInfos. Use Array.isArray check to preserve arrays
when creating new references for React Query cache updates.

Author: rudyfraser

src/state/queries/profile-enrichment.ts

@@ -121,9 +121,13 @@ function applyEnrichment(
       0,
     )
     if (mutated) {
-      // Suppress our own subscriber from re-scanning this update
+      // Suppress our own subscriber from re-scanning this update.
+      // Must preserve data type: arrays stay arrays, objects stay objects.
       isApplyingEnrichment = true
-      queryClient.setQueryData(query.queryKey, {...(data as any)})
+      queryClient.setQueryData(
+        query.queryKey,
+        Array.isArray(data) ? [...data] : {...(data as any)},
+      )
       isApplyingEnrichment = false
     }
   }