fix(ai): apply hotfix for AI selection algorithm

While merging the main branch into the AI branch, the fragile AI selection
algorithm broke due to changes in the transcoding selection logic, which
the AI algorithm relies on. This commit provides a temporary patch to
ensure the selection process continues to function while we work on
improving the AI selection algorithm.

server/selection.go

@@ -137,15 +137,23 @@ func (s *MinLSSelector) Select(ctx context.Context) *BroadcastSession {
 		return s.selectUnknownSession(ctx)
 	}
 
-	lowestLatencyScoreKnownSession := heap.Pop(s.knownSessions).(*BroadcastSession)
-	if lowestLatencyScoreKnownSession.LatencyScore <= s.minLS {
-		// known session has good enough latency score, use it
-		return lowestLatencyScoreKnownSession
+	minSess := sess.(*BroadcastSession)
+	if minSess.LatencyScore > s.minLS && len(s.unknownSessions) > 0 {
+		return s.selectUnknownSession(ctx)
 	}
 
-	// known session does not have good enough latency score, clear the heap and use unknown session
-	s.knownSessions = &sessHeap{}
-	return s.selectUnknownSession(ctx)
+	return heap.Pop(s.knownSessions).(*BroadcastSession)
+
+	// TODO: Fix selection logic, remove above code and uncomment below code.
+	// lowestLatencyScoreKnownSession := heap.Pop(s.knownSessions).(*BroadcastSession)
+	// if lowestLatencyScoreKnownSession.LatencyScore <= s.minLS {
+	// 	// known session has good enough latency score, use it
+	// 	return lowestLatencyScoreKnownSession
+	// }
+
+	// // known session does not have good enough latency score, clear the heap and use unknown session
+	// s.knownSessions = &sessHeap{}
+	// return s.selectUnknownSession(ctx)
 }
 
 // Size returns the number of sessions stored by the selector