Show fall particles while in creative mode. Fixes BUKKIT-5009

Relocate CraftBukkit patch to fall damage when changing
gamemode from creative mode.

src/main/java/net/minecraft/server/PlayerConnection.java

@@ -412,7 +412,6 @@ public class PlayerConnection implements PacketPlayInListener {
 
                 this.player.onGround = packetplayinflying.i();
                 this.minecraftServer.getPlayerList().d(this.player);
-                if (this.player.playerInteractManager.isCreative()) return; // CraftBukkit - fixed fall distance accumulating while being in Creative mode.
                 this.player.b(this.player.locY - d0, packetplayinflying.i());
             } else if (this.e % 20 == 0) {
                 this.a(this.y, this.z, this.q, this.player.yaw, this.player.pitch);

src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -628,6 +628,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
             }
 
             getHandle().playerInteractManager.setGameMode(EnumGamemode.a(mode.getValue()));
+            getHandle().fallDistance = 0;
             getHandle().playerConnection.sendPacket(new PacketPlayOutGameStateChange(3, mode.getValue()));
         }
     }