Add upper-bound to readreceipts_since() and callsites.

Signed-off-by: Jason Volk <jason@zemos.net>

src/api/client/message.rs

@@ -192,10 +192,11 @@ where
 		.max()
 		.unwrap_or_else(PduCount::max);
 
-	let receipts = services
-		.rooms
-		.read_receipt
-		.readreceipts_since(lazy_loading_context.room_id, oldest.into_unsigned());
+	let receipts = services.rooms.read_receipt.readreceipts_since(
+		lazy_loading_context.room_id,
+		oldest.into_unsigned(),
+		Some(newest.into_unsigned()),
+	);
 
 	pin_mut!(receipts);
 	let witness: Witness = events

src/api/client/sync/v3.rs

@@ -645,7 +645,7 @@ async fn load_joined_room(
 	let receipt_events = services
 		.rooms
 		.read_receipt
-		.readreceipts_since(room_id, since)
+		.readreceipts_since(room_id, since, Some(next_batch))
 		.filter_map(async |(read_user, _, edu)| {
 			services
 				.users

src/api/client/sync/v5.rs

@@ -464,7 +464,7 @@ where
 		let mut receipts: Vec<Raw<AnySyncEphemeralRoomEvent>> = services
 			.rooms
 			.read_receipt
-			.readreceipts_since(room_id, *roomsince)
+			.readreceipts_since(room_id, *roomsince, Some(next_batch))
 			.filter_map(async |(read_user, _ts, v)| {
 				services
 					.users