Remove book a call step from onboarding (#22597)

The book a call screen was shown as a dedicated onboarding step after
sending team invites. It is no longer part of the flow: the
`BOOK_ONBOARDING` status, its pending user var, the
`skipBookOnboardingStep` mutation and the `BookCallDecision` screen are
removed, and onboarding completes right after the plan step.

The `/book-call` Cal.com page remains, reachable only from the "Book a
Call" link on the upgrade screen, with a back link to `/plan-required`.

<!-- This is an auto-generated description by cubic. -->
<a
href="https://cubic.dev/pr/twentyhq/twenty/pull/22597?utm_source=github"
target="_blank" rel="noopener noreferrer"
data-no-image-dialog="true"><picture><source
media="(prefers-color-scheme: dark)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source
media="(prefers-color-scheme: light)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img
alt="Review in cubic"
src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a>
<!-- End of auto-generated description by cubic. -->

packages/twenty-client-sdk/src/metadata/generated/schema.graphql

@@ -995,7 +995,6 @@ enum OnboardingStatus {
   SYNC_EMAIL
   APPS_INSTALLATION
   INVITE_TEAM
-  BOOK_ONBOARDING
   COMPLETED
 }
 
@@ -3344,7 +3343,6 @@ type Mutation {
   revokeApiKey(input: RevokeApiKeyInput!): ApiKey
   assignRoleToApiKey(apiKeyId: UUID!, roleId: UUID!): Boolean!
   skipSyncEmailOnboardingStep: OnboardingStepSuccess!
-  skipBookOnboardingStep: OnboardingStepSuccess!
   triggerInstallAppsOnboardingStep(universalIdentifiers: [String!]!): OnboardingStepSuccess!
   updateOneApplicationVariable(key: String!, value: String!, applicationId: UUID!): Boolean!
   checkoutSession(recurringInterval: SubscriptionInterval!, plan: BillingPlanKey! = PRO, requirePaymentMethod: Boolean! = true, successUrlPath: String): BillingSession!

packages/twenty-client-sdk/src/metadata/generated/schema.ts

@@ -708,7 +708,7 @@ export interface User {
 
 
 /** Onboarding status */
-export type OnboardingStatus = 'PLAN_REQUIRED' | 'WORKSPACE_ACTIVATION' | 'PROFILE_CREATION' | 'SYNC_EMAIL' | 'APPS_INSTALLATION' | 'INVITE_TEAM' | 'BOOK_ONBOARDING' | 'COMPLETED'
+export type OnboardingStatus = 'PLAN_REQUIRED' | 'WORKSPACE_ACTIVATION' | 'PROFILE_CREATION' | 'SYNC_EMAIL' | 'APPS_INSTALLATION' | 'INVITE_TEAM' | 'COMPLETED'
 
 export interface RatioAggregateConfig {
     fieldMetadataId: Scalars['UUID']
@@ -2876,7 +2876,6 @@ export interface Mutation {
     revokeApiKey?: ApiKey
     assignRoleToApiKey: Scalars['Boolean']
     skipSyncEmailOnboardingStep: OnboardingStepSuccess
-    skipBookOnboardingStep: OnboardingStepSuccess
     triggerInstallAppsOnboardingStep: OnboardingStepSuccess
     updateOneApplicationVariable: Scalars['Boolean']
     checkoutSession: BillingSession
@@ -6123,7 +6122,6 @@ export interface MutationGenqlSelection{
     revokeApiKey?: (ApiKeyGenqlSelection & { __args: {input: RevokeApiKeyInput} })
     assignRoleToApiKey?: { __args: {apiKeyId: Scalars['UUID'], roleId: Scalars['UUID']} }
     skipSyncEmailOnboardingStep?: OnboardingStepSuccessGenqlSelection
-    skipBookOnboardingStep?: OnboardingStepSuccessGenqlSelection
     triggerInstallAppsOnboardingStep?: (OnboardingStepSuccessGenqlSelection & { __args: {universalIdentifiers: Scalars['String'][]} })
     updateOneApplicationVariable?: { __args: {key: Scalars['String'], value: Scalars['String'], applicationId: Scalars['UUID']} }
     checkoutSession?: (BillingSessionGenqlSelection & { __args: {recurringInterval: SubscriptionInterval, plan: BillingPlanKey, requirePaymentMethod: Scalars['Boolean'], successUrlPath?: (Scalars['String'] | null)} })
@@ -9059,7 +9057,6 @@ export const enumOnboardingStatus = {
    SYNC_EMAIL: 'SYNC_EMAIL' as const,
    APPS_INSTALLATION: 'APPS_INSTALLATION' as const,
    INVITE_TEAM: 'INVITE_TEAM' as const,
-   BOOK_ONBOARDING: 'BOOK_ONBOARDING' as const,
    COMPLETED: 'COMPLETED' as const
 }
 

packages/twenty-client-sdk/src/metadata/generated/types.ts

@@ -7535,9 +7535,6 @@ export default {
             "skipSyncEmailOnboardingStep": [
                 154
             ],
-            "skipBookOnboardingStep": [
-                154
-            ],
             "triggerInstallAppsOnboardingStep": [
                 154,
                 {