Revert "fix: set m.fully_read marker when marking rooms as read" (#2629)

Revert "Set m.fully_read marker when marking rooms as read (#2587)"

This reverts commit 9d49418a1f.

src/app/utils/notifications.ts

@@ -1,6 +1,6 @@
 import { MatrixClient, ReceiptType } from 'matrix-js-sdk';
 
-export async function markAsRead(mx: MatrixClient, roomId: string, privateReceipt?: boolean) {
+export async function markAsRead(mx: MatrixClient, roomId: string, privateReceipt: boolean) {
   const room = mx.getRoom(roomId);
   if (!room) return;
 
@@ -19,15 +19,8 @@ export async function markAsRead(mx: MatrixClient, roomId: string, privateReceip
   const latestEvent = getLatestValidEvent();
   if (latestEvent === null) return;
 
-  const latestEventId = latestEvent.getId();
-  if (!latestEventId) return;
-
-  // Set both the read receipt AND the fully_read marker
-  // The fully_read marker is what persists your read position across sessions
-  await mx.setRoomReadMarkers(
-    roomId,
-    latestEventId, // m.fully_read marker
-    latestEvent,   // m.read receipt event
-    privateReceipt ? { receiptType: ReceiptType.ReadPrivate } : undefined
+  await mx.sendReadReceipt(
+    latestEvent,
+    privateReceipt ? ReceiptType.ReadPrivate : ReceiptType.Read
   );
 }