Add config migration for named entity death logging option (#6390)

patches/server/Upstream-config-migrations.patch

@@ -1,11 +1,10 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: Mark Vainomaa <mikroskeem@mikroskeem.eu>
 Date: Mon, 26 Mar 2018 18:30:53 +0300
-Subject: [PATCH] Make player data saving configurable
+Subject: [PATCH] Upstream config migrations
 
-Upstream has added a patch which negates the need for this patch,
-however, we should still migrate our configuration back upstream,
-to prevent unexpected situations
+This patch contains config migrations for when upstream adds options
+which Paper already had.
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
@@ -23,5 +22,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +            SpigotConfig.config.set("players.disable-saving", SpigotConfig.disableAdvancementSaving);
 +            SpigotConfig.save();
 +        }
++    }
++
++    private static void namedEntityDeaths() {
++        Object val = config.get("settings.log-named-entity-deaths");
++        if (val instanceof Boolean bool && !bool) {
++            SpigotConfig.logNamedDeaths = false;
++            SpigotConfig.config.set("settings.log-named-deaths", false);
++            SpigotConfig.save();
++        }
 +    }
  }