[FIX] crm: no context default user crm.lead

default_user_id on the crm.lead window actions is not needed since the
current user is already the default on the field.

So all it does is prevent user-defined values to work and possibly
affect custom code that may not expect the behavior.

opw-1938037
closes #31151

addons/crm/views/crm_lead_views.xml

@@ -833,7 +833,6 @@ for rec in records:
             <field name="domain">[('type','=','opportunity')]</field>
             <field name="context">{
                     'default_type': 'opportunity',
-                    'default_user_id': uid
                 }
             </field>
             <field name="search_view_id" ref="crm.view_crm_case_opportunities_filter"/>
@@ -884,7 +883,6 @@ for rec in records:
             <field name="domain">[('type','=','opportunity')]</field>
             <field name="context">{
                     'default_type': 'opportunity',
-                    'default_user_id': uid,
                     'search_default_assigned_to_me': 1,
             }</field>
             <field name="view_ids"