Don't run player loot table for spectators (#11801)

Author: Machine-Maker

paper-server/patches/sources/net/minecraft/server/level/ServerPlayer.java.patch

@@ -470,7 +470,7 @@
 +                }
 +            }
 +        }
-+        if (this.shouldDropLoot(this.level())) { // Paper - fix player loottables running when mob loot gamerule is false
++        if (!this.isSpectator() && this.shouldDropLoot(this.level())) { // Paper - fix player loottables running when mob loot gamerule is false
 +            // SPIGOT-5071: manually add player loot tables (SPIGOT-5195 - ignores keepInventory rule)
 +            this.dropFromLootTable(this.level(), damageSource, this.lastHurtByPlayerMemoryTime > 0);
 +            // Paper - Restore vanilla drops behaviour; custom death loot is a noop on server player, remove.