Fixed Infinite Play bug

When Infinite Play was set once, it was never reset.

vesper/src/Player/Player.cpp

@@ -237,9 +237,8 @@ void Player::setMelodyAttributes(JsonVariant doc) {
         continuous_loop = doc["continuous_loop"].as<bool>();
     }
 
-    if (continuous_loop && total_duration == 0) {
-        infinite_play = true;
-    }
+    // Recalculate infinite_play based on current values (reset first!)
+    infinite_play = (continuous_loop && total_duration == 0);
 
     if (!continuous_loop) {
         total_duration = segment_duration;