fix: invalidate transcript query on STATUS websocket event

Without this, the processing page never redirects after completion
because the redirect logic watches the REST query data, not the
WebSocket status state.

Cherry-picked from feat-dag-progress (faec509a).

www/app/(app)/transcripts/useWebSockets.ts

@@ -431,6 +431,7 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
               );
             }
             setStatus(message.data);
+            invalidateTranscript(queryClient, transcriptId as NonEmptyString);
             if (message.data.value === "ended") {
               ws.close();
             }