Always create extended disks

Whilst the legacy ones are important for backwards compatibility, they
cannot have an ID of 0, which introduces issues when they are the first
disk created in the world.

src/main/java/dan200/computercraft/shared/media/items/ItemDiskLegacy.java

@@ -54,15 +54,7 @@ public void getSubItems( @Nonnull CreativeTabs tabs, @Nonnull NonNullList<ItemSt
    @Nonnull
    public static ItemStack createFromIDAndColour( int id, String label, int colour )
    {
        if( colour != Colour.Blue.getHex() )
        {
            return ItemDiskExpanded.createFromIDAndColour( id, label, colour );
        }
        
        ItemStack stack = new ItemStack( ComputerCraft.Items.disk, 1 );
        ComputerCraft.Items.disk.setDiskID( stack, id );
        ComputerCraft.Items.disk.setLabel( stack, label );
        return stack;
        return ItemDiskExpanded.createFromIDAndColour( id, label, colour );
    }
    
    public int getDiskID( @Nonnull ItemStack stack )