fix: fix Screenshot fullscreen flickering

kernel/src/Api/WinServer.cpp

@@ -99,7 +99,9 @@ namespace WinServer {
         WindowSlot& slot = g_slots[windowId];
         if (!slot.used || slot.eventMailbox == nullptr) return -1;
 
-        int rc = Ipc::MailboxSend(slot.eventMailbox, 0, event, sizeof(*event));
+        int rc = (event->type == 1)
+            ? Ipc::MailboxSendCoalescedMouse(slot.eventMailbox, 0, event, sizeof(*event))
+            : Ipc::MailboxSend(slot.eventMailbox, 0, event, sizeof(*event));
         return rc > 0 ? 0 : -1;
     }