V2 opportunities (#2565)

* changed isSystem to false

* wip

* wip

* wip

* add amount viewfield seed

* seed other viewFields

* upate tenant seeds

* Remove calls to old pipelines

---------

Co-authored-by: Charles Bochet <charles@twenty.com>
Co-authored-by: Charles Bochet <charlesBochet@users.noreply.github.com>

front/src/modules/object-metadata/components/ObjectMetadataNavItems.tsx

@@ -22,6 +22,7 @@ export const ObjectMetadataNavItems = () => {
   return (
     <>
       {objectMetadataItems.map((objectMetadataItem) => {
+        if (objectMetadataItem.nameSingular === 'opportunityV2') return null;
         return (
           <NavItem
             key={objectMetadataItem.id}