Extract folder-channel id lookup into a helper in ActivityView

Generated-By: PostHog Code
Task-Id: 47e3ad2f-36c4-4d54-ae0c-07923d306818

Author: k11kirky

packages/ui/src/features/canvas/components/ActivityView.tsx

@@ -145,6 +145,10 @@ export function ActivityView() {
       ),
     [folderChannels],
   );
+  const folderChannelIdFor = (channelName: string | null): string | null =>
+    channelName
+      ? (folderIdByName.get(normalizeChannelName(channelName)) ?? null)
+      : null;
   const markSeen = useActivitySeenStore((s) => s.markSeen);
   // Snapshot before marking seen so rows that were new on arrival keep their
   // dot for this visit.
@@ -198,13 +202,7 @@ export function ActivityView() {
                 <ActivityRow
                   key={item.messageId}
                   item={item}
-                  folderChannelId={
-                    item.channelName
-                      ? (folderIdByName.get(
-                          normalizeChannelName(item.channelName),
-                        ) ?? null)
-                      : null
-                  }
+                  folderChannelId={folderChannelIdFor(item.channelName)}
                   isNew={!seenAtOpen || item.createdAt > seenAtOpen}
                   currentUserEmail={currentUser?.email}
                 />