Add configuration option to control fix for MC-159283 end rings

paper-server/patches/sources/net/minecraft/world/level/levelgen/DensityFunctions.java.patch

@@ -22,7 +22,7 @@
              int i2 = x % 2;
              int i3 = z % 2;
 -            float f = 100.0F - Mth.sqrt(x * x + z * z) * 8.0F;
-+            float f = 100.0F - Mth.sqrt((long)x * (long)x + (long)z * (long)z) * 8.0F; // Paper - cast ints to long to avoid integer overflow
++            float f = 100.0F - (io.papermc.paper.configuration.GlobalConfiguration.get().misc.fixFarEndTerrainGeneration ? Mth.sqrt((long)x * (long)x + (long)z * (long)z) : Mth.sqrt(x * x + z * z)) * 8.0F; // Paper - cast ints to long when MC-159283 fix enabled
              f = Mth.clamp(f, -100.0F, 80.0F);
 
 +            NoiseCache cache = noiseCache.get().computeIfAbsent(noise, noiseKey -> new NoiseCache()); // Paper - Perf: Optimize end generation

paper-server/src/main/java/io/papermc/paper/configuration/GlobalConfiguration.java

@@ -345,6 +345,8 @@ private void postProcess() {
         public boolean preventNegativeVillagerDemand = false;
         @Comment("Whether the nether dimension is enabled and will be loaded.")
         public boolean enableNether = true;
+        @Comment("Keeps Paper's fix for MC-159283 enabled. Disable to use vanilla End ring terrain.")
+        public boolean fixFarEndTerrainGeneration = true;
     }
 
     public BlockUpdates blockUpdates;