Hi,

     You can control it by adding domain in action of Sale Order. Since there is already action defined for Sale Order and they are already using domain to block draft quotation from Sale Order, we have to use inheritance that to suit our need.

Here is the action defined for sale order:-

<record id="action_orders" model="ir.actions.act_window">
 <field name="name">Sales Orders</field>      
 <field name="type">ir.actions.act_window</field> 
 <field name="res_model">sale.order</field>       
 <field name="view_type">form</field>          
 <field name="view_mode">tree,form,calendar,graph</field>   
 <field name="search_view_id" ref="view_sales_order_filter"/>  
 <field name="context">{'search_default_my_sale_orders_filter': 1}</field>
 <field name="domain">[('state', 'not in', ('draft', 'sent', 'cancel'))]</field>
 <field name="help" type="html">    
 <p class="oe_view_nocontent_create"> 
            Click to create a quotation that can be converted into a sales order.
            </p><p>Odoo will help you efficiently handle the complete sales flow:
            quotation, sales order, delivery, invoicing and payment.
            </p>       
 </field>      
 </record>

 modify this line:-

<field name="domain">[('state', 'not in', ('draft', 'sent', 'cancel'))]</field>

Let test be the custom state, we have to add that to domain like this-

<field name="domain">[('state', 'not in', ('draft','test', 'sent', 'cancel'))]</field>

    Now you won't see records in that sate in Sale Order.

Hope this helps.