Prep threadgate shadow hack (#4970)

Co-authored-by: Hailey <me@haileyok.com>

src/state/queries/threadgate/util.ts

@@ -139,3 +139,23 @@ export function createThreadgateRecord(
     hiddenReplies: threadgate.hiddenReplies || [],
   }
 }
+
+export function createTempThreadgateView({
+  postUri,
+  hiddenReplies,
+}: Pick<AppBskyFeedThreadgate.Record, 'hiddenReplies'> & {
+  postUri: string
+}): AppBskyFeedDefs.ThreadgateView {
+  const record: AppBskyFeedThreadgate.Record = {
+    $type: 'app.bsky.feed.threadgate',
+    post: postUri,
+    allow: undefined,
+    hiddenReplies,
+    createdAt: new Date().toISOString(),
+  }
+  return {
+    $type: 'app.bsky.feed.defs#threadgateView',
+    uri: postUri,
+    record,
+  }
+}