Add dropped hunk from mid-tick tasks (#7034)

patches/server/Consolidate-flush-calls-for-entity-tracker-packets.patch

@@ -26,8 +26,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 @@ -0,0 +0,0 @@ public class ServerChunkCache extends ChunkSource {
-             });
-             gameprofilerfiller.pop();
+ 
+             //  Paper - no, iterating just ONCE is expensive enough! Don't do it TWICE! Code moved up
              gameprofilerfiller.pop();
 +            // Paper start - controlled flush for entity tracker packets
 +            List<net.minecraft.network.Connection> disabledFlushes = new java.util.ArrayList<>(this.level.players.size());