Add label to mocked connections (twentyhq#5858)

<img width="865" alt="Capture d’écran 2024-06-13 à 17 48 03"
src="https://github.com/twentyhq/twenty/assets/22936103/2d313448-fbd5-4ff1-a65b-afd4df86117a">

packages/twenty-front/src/testing/mock-data/remote-servers.ts

@@ -16,6 +16,7 @@ export const mockedRemoteServers = [
     },
     updatedAt: '2024-04-30T13:41:25.858Z',
     schema: 'public',
+    label: 'postgres DB',
   },
   {
     __typename: 'RemoteServer',
@@ -27,5 +28,6 @@ export const mockedRemoteServers = [
     },
     foreignDataWrapperType: 'stripe_fdw',
     updatedAt: '2024-04-30T13:41:25.858Z',
+    label: 'stripe DB',
   },
 ];