Prevent remote object updates (#4804)

Backend: Adding a new util function that throw an error if the
objectMetadata is remote

Frontend: hiding the save button when remote

Also renaming `useObjectMetadataItemForSettings` since this hook is used
in other places than settings and is not in the settings repo. Name can
definitely be challenged!

---------

Co-authored-by: Thomas Trompette <thomast@twenty.com>

packages/twenty-server/src/engine/metadata-modules/object-metadata/utils/assert-mutation-not-on-remote-object.util.ts

@@ -0,0 +1,9 @@
+import { ObjectMetadataInterface } from 'src/engine/metadata-modules/field-metadata/interfaces/object-metadata.interface';
+
+export const assertMutationNotOnRemoteObject = (
+  objectMetadataItem: ObjectMetadataInterface,
+) => {
+  if (objectMetadataItem.isRemote) {
+    throw new Error('Remote objects are read-only');
+  }
+};