refactor(sync/v3): Split load_joined_room into smaller functions

src/service/sending/sender.rs

@@ -530,7 +530,7 @@ impl Service {
 			}
 
 			max_edu_count.fetch_max(count, Ordering::Relaxed);
-			if !self.services.globals.user_is_local(user_id) {
+			if !self.services.globals.user_is_local(&user_id) {
 				continue;
 			}
 
@@ -554,7 +554,7 @@ impl Service {
 			let receipt = receipt
 				.remove(&ReceiptType::Read)
 				.expect("our read receipts always set this")
-				.remove(user_id)
+				.remove(&user_id)
 				.expect("our read receipts always have the user here");
 
 			let receipt_data = ReceiptData {
@@ -562,7 +562,7 @@ impl Service {
 				event_ids: vec![event_id.clone()],
 			};
 
-			if read.insert(user_id.to_owned(), receipt_data).is_none() {
+			if read.insert(user_id, receipt_data).is_none() {
 				*num = num.saturating_add(1);
 				if *num >= SELECT_RECEIPT_LIMIT {
 					break;