(breaking change) Allow users with a single workspace to update their email. (#15736)

- Users with a single workspace are allowed to update their email across
`core.user` and `workspace_xyz.workspaceMember`.
- The latter happens asynchronously (built it like this for non-blocking
with multiple workspaces), but since we restrict the email update
functionality to a single user, we can also update the email in
workspaceMember synchronously - I left asynchronous there to receive
feedback on whether we should move to synchronous or not.
- Merged main and resolved conflicts to ensure we use the
`SettingsPermissionGuard` and the updated `workspace.service.ts` code.

One edge-case that I was trying to communicate on Discord: 

Say that an admin is a member of multiple workspaces. Therefore, they
can allow roles with PROFILE_INFORMATION permission to update their
email.

<p align="center">
<img width="553" height="115" alt="image"
src="https://github.com/user-attachments/assets/80382b1f-a9e3-4dac-b606-c2defeb2c330"
/>
</p>

However, since the admin is part of multiple workspaces, he/she cannot
even update own email - the field stays disabled, leading to some
confusion.

<p align="center">
<img width="545" height="255" alt="image"
src="https://github.com/user-attachments/assets/5e6d27db-c9a8-4d5e-9ab6-65c77beae5b4"
/>
</p>

However, the workspace can have another member with admin role or some
other role that has PROFILE_INFORMATION permission flag. That user will
be and should be allowed to update email, so we cannot hide `email` from
dropdown options.

<p align="center">
<img width="585" height="283" alt="image"
src="https://github.com/user-attachments/assets/a670d3ac-cf48-4865-a425-b909093d8420"
/>
</p>

The behavior is fine imo, just a little confusing for members with more
than one workspace.

I have also tested the flow by signing up to YC workspace with my org
google account (twenty.com), then changing email to my personal address.
- After changing, I need to login using Google with my personal account
to access YC workspace again.
- If I login using Google with org google account (twenty.com), a new
user account is created.

This behavior is consistent with Notion and Linear. 

Finally, as for the verification of email, the user is asked to verify
email while they're logged in, but just in case they logout without
verifying, the next login would force them to verify their email in the
email/password flow.

However, for Social/SSO, they must verify before they logout or else
they'd have to contact support for assistance. I have not looked into
how to show verification screen while logging in via Social/SSO yet, but
if that's something critical for completeness here, I shall revisit it.

---------

Co-authored-by: Félix Malfait <felix@twenty.com>

packages/twenty-server/src/engine/core-modules/message-queue/jobs.module.ts

@@ -12,6 +12,7 @@ import { StripeModule } from 'src/engine/core-modules/billing/stripe/stripe.modu
 import { EmailSenderJob } from 'src/engine/core-modules/email/email-sender.job';
 import { EmailModule } from 'src/engine/core-modules/email/email.module';
 import { UserWorkspaceModule } from 'src/engine/core-modules/user-workspace/user-workspace.module';
+import { UpdateWorkspaceMemberEmailJob } from 'src/engine/core-modules/user/jobs/update-workspace-member-email.job';
 import { UserVarsModule } from 'src/engine/core-modules/user/user-vars/user-vars.module';
 import { UserModule } from 'src/engine/core-modules/user/user.module';
 import { WebhookJobModule } from 'src/engine/core-modules/webhook/jobs/webhook-job.module';
@@ -74,6 +75,7 @@ import { WorkflowModule } from 'src/modules/workflow/workflow.module';
     UpdateSubscriptionQuantityJob,
     HandleWorkspaceMemberDeletedJob,
     CleanWorkspaceDeletionWarningUserVarsJob,
+    UpdateWorkspaceMemberEmailJob,
   ],
 })
 export class JobsModule {