Improve use set next onboarding state (#6076)

querying workspaceMembers may be slow leads to wrong
setNextOnboardingStatus value. So we added a resolved field in workspace
to get workspaceMemberCount directly

packages/twenty-front/src/testing/mock-data/users.ts

@@ -66,6 +66,7 @@ export const mockDefaultWorkspace: Workspace = {
     interval: SubscriptionInterval.Month,
     status: SubscriptionStatus.Active,
   },
+  workspaceMembersCount: 1,
 };
 
 export const mockedWorkspaceMemberData: WorkspaceMember = {