Refactor onboarding user vars to be absent when user is fully onboarded (#6531)

In this PR:
- take feedbacks from: https://github.com/twentyhq/twenty/pull/6530 /
https://github.com/twentyhq/twenty/pull/6529 /
https://github.com/twentyhq/twenty/pull/6526 /
https://github.com/twentyhq/twenty/pull/6512
- refactor onboarding uservars to be absent when the user is fully
onboarded: isStepComplete ==> isStepIncomplete
- introduce a new workspace.activationStatus: CREATION_ONGOING

I'm retesting the whole flow:
- with/without BILLING
- sign in with/without SSO
- sign up with/without SSO
- another workspaceMembers join the team
- subscriptionCanceled
- access to billingPortal

packages/twenty-server/src/engine/integrations/llm-tracing/drivers/console.driver.ts

@@ -1,6 +1,7 @@
+/* eslint-disable no-console */
 import { BaseCallbackHandler } from '@langchain/core/callbacks/base';
-import { ConsoleCallbackHandler } from '@langchain/core/tracers/console';
 import { Run } from '@langchain/core/tracers/base';
+import { ConsoleCallbackHandler } from '@langchain/core/tracers/console';
 
 import { LLMTracingDriver } from 'src/engine/integrations/llm-tracing/drivers/interfaces/llm-tracing-driver.interface';