Skip install apps onboarding step for invitees (#23214)

Users joining an existing workspace via an invitation link were shown
the install apps onboarding step after skipping the email-connect step,
even though the backend never assigns them that step (and apps they
selected were silently not installed).

The frontend optimistic transition unconditionally mapped SYNC_EMAIL to
APPS_INSTALLATION. It now checks workspaceMembersCount === 1, like the
existing PROFILE_CREATION to INVITE_TEAM transition, so invitees go
straight to profile creation.

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packages/twenty-front/src/modules/onboarding/hooks/__tests__/useSetNextOnboardingStatus.test.ts

@@ -133,6 +133,19 @@ describe('useSetNextOnboardingStatus', () => {
     expect(shouldOpenAiChatAfterOnboarding).toBe(false);
   });
 
+  it('should create profile after syncing emails when more than 1 workspaceMember exist', () => {
+    const {
+      nextOnboardingStatus,
+      isWelcomeAnimationVisible,
+      shouldOpenAiChatAfterOnboarding,
+    } = renderHooks(OnboardingStatus.SYNC_EMAIL, {
+      withOneWorkspaceMember: false,
+    });
+    expect(nextOnboardingStatus).toEqual(OnboardingStatus.PROFILE_CREATION);
+    expect(isWelcomeAnimationVisible).toBe(false);
+    expect(shouldOpenAiChatAfterOnboarding).toBe(false);
+  });
+
   it('should create profile after installing apps', () => {
     const {
       nextOnboardingStatus,

packages/twenty-front/src/modules/onboarding/hooks/useSetNextOnboardingStatus.ts

@@ -41,7 +41,10 @@ const getNextOnboardingStatus = ({
   }
 
   if (currentUser?.onboardingStatus === OnboardingStatus.SYNC_EMAIL) {
-    return OnboardingStatus.APPS_INSTALLATION;
+    if (currentWorkspace?.workspaceMembersCount === 1) {
+      return OnboardingStatus.APPS_INSTALLATION;
+    }
+    return OnboardingStatus.PROFILE_CREATION;
   }
 
   if (currentUser?.onboardingStatus === OnboardingStatus.APPS_INSTALLATION) {