[FIX] maintenance: use of "active" instead of "archive"

The maintenance.request "active" field was renamed to "archive" for some
strange reason by commit 9a20c6556f.
The value was also inverted.

Unfortunately, "active" was not replaced in a search filter.

opw-744168

addons/maintenance/views/maintenance_views.xml

@@ -27,7 +27,7 @@
                 <separator/>
                 <filter string="Unread Messages" name="message_needaction" domain="[('message_needaction','=',True)]"/>
                 <separator/>
-                <filter string="Archived" name="inactive" domain="[('active','=',False)]"/>
+                <filter string="Archived" name="inactive" domain="[('archive','=',True)]"/>
                 <group  expand='0' string='Group by...'>
                     <filter string='Assigned' domain="[]" context="{'group_by': 'technician_user_id'}"/>
                     <filter string='Category' domain="[]" context="{'group_by' : 'category_id'}"/>