[FIX] mrp: show manual consumption when workorder not enabled

In 49bc9aac201136e684cac9d84df97f80d217afa4, when we need operation_id
when we check if manual_consumption is readonly or not, so
groups="mrp.group_mrp_routings" was added for manual_consumption.
As a result, we can't see manual_consumption on BOM when workorder is
not enabled.
To fix, we add a computed field as a workaround.

Task-3116125

Part-of: odoo/odoo#113538

addons/mrp/models/mrp_bom.py

@@ -407,6 +407,8 @@ class MrpBomLine(models.Model):
         'Manual Consumption', default=False, compute='_compute_manual_consumption', store=True, copy=True,
         help="When activated, then the registration of consumption for that component is recorded manually exclusively.\n"
              "If not activated, and any of the components consumption is edited manually on the manufacturing order, Odoo assumes manual consumption also.")
+    manual_consumption_readonly = fields.Boolean(
+        'Manual Consumption Readonly', compute='_compute_manual_consumption_readonly')
 
     _sql_constraints = [
         ('bom_qty_zero', 'CHECK (product_qty>=0)', 'All product quantities must be greater or equal to 0.\n'
@@ -418,6 +420,11 @@ class MrpBomLine(models.Model):
     def _compute_manual_consumption(self):
         self.filtered(lambda m: m.tracking != 'none' or m.operation_id).manual_consumption = True
 
+    @api.depends('tracking', 'operation_id')
+    def _compute_manual_consumption_readonly(self):
+        for line in self:
+            line.manual_consumption_readonly = (line.tracking != 'none' or line.operation_id)
+
     @api.depends('product_id', 'bom_id')
     def _compute_child_bom_id(self):
         products = self.product_id

addons/mrp/views/mrp_bom_views.xml

@@ -98,8 +98,8 @@
                                     <field name="bom_product_template_attribute_value_ids" optional="hide" widget="many2many_tags" options="{'no_create': True}" attrs="{'column_invisible': [('parent.product_id', '!=', False)]}" groups="product.group_product_variant"/>
                                     <field name="allowed_operation_ids" invisible="1"/>
                                     <field name="operation_id" groups="mrp.group_mrp_routings" optional="hidden" attrs="{'column_invisible': [('parent.type','not in', ('normal', 'phantom'))]}" options="{'no_quick_create':True,'no_create_edit':True}"/>
-                                    <field name="tracking" invisible="1"/>
-                                    <field name="manual_consumption" groups="mrp.group_mrp_routings" optional="hide" attrs="{'readonly': ['|', ('tracking', '!=', 'none'), ('operation_id', '!=', False)]}"/>
+                                    <field name="manual_consumption_readonly" invisible="1"/>
+                                    <field name="manual_consumption" optional="hide" attrs="{'readonly': [('manual_consumption_readonly', '=', True)]}"/>
                                 </tree>
                             </field>
                         </page>