Fix Miner Pipe Deleting TileEntities (#2529)

(cherry picked from commit dd6f3e3)

Author: ghzdude

src/main/java/gregtech/api/capability/impl/miner/MinerLogic.java

@@ -157,8 +157,10 @@ public void performMining() {
         // drill a hole beneath the miner and extend the pipe downwards by one
         WorldServer world = (WorldServer) metaTileEntity.getWorld();
         if (mineY.get() < pipeY.get()) {
-            world.destroyBlock(
-                    new BlockPos(metaTileEntity.getPos().getX(), pipeY.get(), metaTileEntity.getPos().getZ()), false);
+            var pipePos = new BlockPos(metaTileEntity.getPos().getX(), pipeY.get(), metaTileEntity.getPos().getZ());
+            if (world.getTileEntity(pipePos) == null &&
+                    world.getBlockState(pipePos).getBlockHardness(world, pipePos) >= 0)
+                world.destroyBlock(pipePos, false);
             pipeY.decrementAndGet();
             incrementPipeLength();
         }