Optimize call to getFluid for explosions

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

@@ -53,6 +53,15 @@
      }
  
      private ExplosionDamageCalculator makeDamageCalculator(@Nullable Entity entity) {
+@@ -135,7 +150,7 @@
+                         for (float f1 = 0.3F; f > 0.0F; f -= 0.22500001F) {
+                             BlockPos blockposition = BlockPos.containing(d4, d5, d6);
+                             BlockState iblockdata = this.level.getBlockState(blockposition);
+-                            FluidState fluid = this.level.getFluidState(blockposition);
++                            FluidState fluid = iblockdata.getFluidState(); // Paper - Perf: Optimize call to getFluid for explosions
+ 
+                             if (!this.level.isInWorldBounds(blockposition)) {
+                                 break;
 @@ -171,7 +186,7 @@
          int l = Mth.floor(this.center.y + (double) f + 1.0D);
          int i1 = Mth.floor(this.center.z - (double) f - 1.0D);