Add some missing annotations and an incorrect one (#12204)

paper-server/patches/features/0015-Moonrise-optimisation-patches.patch

@@ -29729,7 +29729,7 @@ index 300f3ed58109219d97846082941b860585f66fed..892a7c1eb1b321ca6d5ca709142e7fea
  
      // Paper start - Affects Spawning API
 diff --git a/net/minecraft/world/level/Level.java b/net/minecraft/world/level/Level.java
-index 63f8b0c47e3321b74f4b6bcbc1e28cd751911198..eb4d03cfdb34243901cfba832d35559d5be9e876 100644
+index ba50f21707a69bbf720345996d7c83d2064e5246..e9751a95ffd88f365185d53f8764291d9d2473e2 100644
 --- a/net/minecraft/world/level/Level.java
 +++ b/net/minecraft/world/level/Level.java
 @@ -81,6 +81,7 @@ import net.minecraft.world.level.storage.LevelData;
@@ -30403,7 +30403,7 @@ index 63f8b0c47e3321b74f4b6bcbc1e28cd751911198..eb4d03cfdb34243901cfba832d35559d
 +        // Paper end - getblock optimisations - cache world height/sections
          this.spigotConfig = new org.spigotmc.SpigotWorldConfig(((net.minecraft.world.level.storage.PrimaryLevelData) levelData).getLevelName()); // Spigot
          this.paperConfig = paperWorldConfigCreator.apply(this.spigotConfig); // Paper - create paper world config
-         this.generator = gen;
+         this.generator = generator;
 @@ -281,6 +914,7 @@ public abstract class Level implements LevelAccessor, UUIDLookup<Entity>, AutoCl
          });
          // CraftBukkit end