Fix death message containing empty string (#8656)

Resolves: #8654

patches/api/0005-Adventure.patch

@@ -2576,7 +2576,7 @@ index 7190db11eff7d48df8a99f405a9dbaefdfa76e3d..1268066e30ddb0cd3792ea4b3de894eb
  
      @Override
 diff --git a/src/main/java/org/bukkit/event/entity/PlayerDeathEvent.java b/src/main/java/org/bukkit/event/entity/PlayerDeathEvent.java
-index 3c2ea8fec3a748cab7f5ad9100d12bd8213ec6c9..7941c60b0e1840785ba2b250071591bd75bc6e35 100644
+index 3c2ea8fec3a748cab7f5ad9100d12bd8213ec6c9..1f1df82c9bcf18bad1187e3f24ede1901d91c06f 100644
 --- a/src/main/java/org/bukkit/event/entity/PlayerDeathEvent.java
 +++ b/src/main/java/org/bukkit/event/entity/PlayerDeathEvent.java
 @@ -12,25 +12,48 @@ import org.jetbrains.annotations.Nullable;
@@ -2624,7 +2624,7 @@ index 3c2ea8fec3a748cab7f5ad9100d12bd8213ec6c9..7941c60b0e1840785ba2b250071591bd
          this.newTotalExp = newTotalExp;
          this.newLevel = newLevel;
          this.deathMessage = deathMessage;
-+        this.adventure$deathMessage = deathMessage != null ? net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(deathMessage) : net.kyori.adventure.text.Component.empty(); // Paper
++        this.adventure$deathMessage = deathMessage != null ? net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(deathMessage) : null; // Paper
      }
  
      @NotNull
@@ -2662,7 +2662,7 @@ index 3c2ea8fec3a748cab7f5ad9100d12bd8213ec6c9..7941c60b0e1840785ba2b250071591bd
 +    @Deprecated // Paper
      public void setDeathMessage(@Nullable String deathMessage) {
          this.deathMessage = deathMessage;
-+        this.adventure$deathMessage = deathMessage != null ? net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(deathMessage) : net.kyori.adventure.text.Component.empty(); // Paper
++        this.adventure$deathMessage = deathMessage != null ? net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(deathMessage) : null; // Paper
      }
  
      /**

patches/api/0178-PlayerDeathEvent-getItemsToKeep.patch

@@ -8,7 +8,7 @@ Exposes a mutable array on items a player should keep on death
 Example Usage: https://gist.github.com/aikar/5bb202de6057a051a950ce1f29feb0b4
 
 diff --git a/src/main/java/org/bukkit/event/entity/PlayerDeathEvent.java b/src/main/java/org/bukkit/event/entity/PlayerDeathEvent.java
-index a871eddf73f918c0e3d2554ef8d9cfd0f830fcaa..5f7d0d08be8bca06c9aa89659b7865a7b5a547f8 100644
+index 3b43954b428f2e5e9a718bf6d34116f25c90269f..bfd3654c02e8ad906c620a86165a38c65a31b62b 100644
 --- a/src/main/java/org/bukkit/event/entity/PlayerDeathEvent.java
 +++ b/src/main/java/org/bukkit/event/entity/PlayerDeathEvent.java
 @@ -36,7 +36,6 @@ public class PlayerDeathEvent extends EntityDeathEvent {
@@ -20,7 +20,7 @@ index a871eddf73f918c0e3d2554ef8d9cfd0f830fcaa..5f7d0d08be8bca06c9aa89659b7865a7
          this(player, drops, droppedExp, 0, deathMessage);
      }
 @@ -56,6 +55,41 @@ public class PlayerDeathEvent extends EntityDeathEvent {
-         this.adventure$deathMessage = deathMessage != null ? net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(deathMessage) : net.kyori.adventure.text.Component.empty(); // Paper
+         this.adventure$deathMessage = deathMessage != null ? net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(deathMessage) : null; // Paper
      }
  
 +    @Deprecated // Paper