Fix colony banners not being able to render if a flag was scanned in …

…inside a colony (#10226)

When a colony banner is scanned in inside of a colony it already gets assigned a colony ID in the tile entity, causing them to, upon placement, no longer update their actual colony ID. Causing them to render the wrong or a nonexistent banner. Removed this condition so banners will always re-check the colony they are in upon placement.
Updated code to current day code style

src/main/java/com/minecolonies/api/blocks/decorative/AbstractColonyFlagBanner.java

@@ -53,21 +53,27 @@ public BlockEntity newBlockEntity(@NotNull final BlockPos blockPos, @NotNull fin
     @Override
     public void setPlacedBy(final Level worldIn, final @NotNull BlockPos pos, @NotNull BlockState state, @Nullable LivingEntity placer, @NotNull ItemStack stack)
     {
-        if (worldIn.isClientSide) return;
+        if (worldIn.isClientSide)
+        {
+            return;
+        }
 
         BlockEntity te = worldIn.getBlockEntity(pos);
-        if (te instanceof TileEntityColonyFlag && ((TileEntityColonyFlag) te).colonyId == -1 )
+        if (te instanceof TileEntityColonyFlag flagTileEntity)
         {
             IColony colony = IColonyManager.getInstance().getIColony(worldIn, pos);
 
             // Allow the player to place their own beyond the colony
             if (colony == null && placer instanceof Player)
+            {
                 colony = IColonyManager.getInstance().getIColonyByOwner(worldIn, (Player) placer);
+            }
 
             if (colony != null)
-                ((TileEntityColonyFlag) te).colonyId = colony.getID();
+            {
+                flagTileEntity.colonyId = colony.getID();
+            }
         }
-
     }
 
     @NotNull