[FIX] sale_{project,timesheet}: hide SOL field when task is not billable

This commit hide SOL field for project task form view and hide
it's value from tree view when task is not billable and give
correct xpath on SOL field attributes to display remaining hour
and price unit in name_search.

task-3018123

Part-of: odoo/odoo#103183

addons/sale_project/views/project_task_views.xml

@@ -79,7 +79,7 @@
             <xpath expr="//field[@name='partner_phone']" position="after">
                 <field name="sale_order_id" attrs="{'invisible': True}" groups="sales_team.group_sale_salesman"/>
                 <field name="sale_line_id" groups="!sales_team.group_sale_salesman" string="Sales Order Item" options='{"no_open": True}' readonly="1" context="{'create': False, 'edit': False, 'delete': False}"/>
-                <field name="sale_line_id" groups="sales_team.group_sale_salesman" string="Sales Order Item" options='{"no_create": True}' readonly="0" context="{'create': False, 'edit': False, 'delete': False}"/>
+                <field name="sale_line_id" groups="sales_team.group_sale_salesman" string="Sales Order Item" options='{"no_create": True}' readonly="0" context="{'create': False, 'edit': False, 'delete': False, 'with_price_unit': True}"/>
                 <field name="commercial_partner_id" invisible="1" />
             </xpath>
         </field>

addons/sale_timesheet/views/project_task_views.xml

@@ -188,15 +188,13 @@
             <field name="model">project.task</field>
             <field name="inherit_id" ref="sale_project.view_sale_project_inherit_form"/>
             <field name="arch" type="xml">
-                <xpath expr="//field[@name='sale_line_id']" position="attributes">
-                    <attribute name="context">{'with_remaining_hours': True, 'with_price_unit': True}</attribute>
+                <xpath expr="//field[@name='sale_line_id'][2]" position="attributes">
+                    <attribute name="context">{'create': False, 'edit': False, 'delete': False, 'with_price_unit': True, 'with_remaining_hours': True}</attribute>
+                    <!-- To do: move allow_billable field in sale_project and add attrs directly on field in master -->
                     <attribute name="attrs">
                         {'invisible': [('allow_billable', '=', False)]}
                     </attribute>
                 </xpath>
-                <xpath expr="//field[@name='sale_order_id']" position="attributes">
-                    <attribute name="invisible">1</attribute>
-                </xpath>
             </field>
         </record>
 </odoo>