remove nestjs-query from app-token and drop unused createOneAppToken mutation (#22765)

## What

Migrates `app-token` off `@ptc-org/nestjs-query` and removes the
auto-generated `createOneAppToken` mutation, which was unused dead API
surface.

## Why

The `createOneAppToken` mutation was reachable only from the schema — no
frontend query, SDK caller, or test used it. It was also non-functional
(its input couldn't set the token `value`), a leftover from
nestjs-query's default `create.one` being left enabled. Real app tokens
(refresh, password-reset, email-verification, invitation, OAuth,
enterprise) are all created directly via the repository in ~14 services,
none of which touched this mutation.

## Notes

- ⚠️ This removes `AppToken`, `createOneAppToken`,
`CreateAppTokenInput`, and `CreateOneAppTokenInput` from the `/metadata`
schema, so the **api-breaking-changes check will flag it**


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Co-authored-by: Weiko <corentin@twenty.com>

packages/twenty-server/src/engine/core-modules/auth/auth.module.ts

@@ -5,7 +5,6 @@ import { CoreEntityCacheModule } from 'src/engine/core-entity-cache/core-entity-
 import { ApiKeyEntity } from 'src/engine/core-modules/api-key/api-key.entity';
 import { ApiKeyModule } from 'src/engine/core-modules/api-key/api-key.module';
 import { AppTokenEntity } from 'src/engine/core-modules/app-token/app-token.entity';
-import { AppTokenService } from 'src/engine/core-modules/app-token/services/app-token.service';
 import { ApplicationRegistrationModule } from 'src/engine/core-modules/application/application-registration/application-registration.module';
 import { ApplicationModule } from 'src/engine/core-modules/application/application.module';
 import { ConnectionProviderOAuthController } from 'src/engine/core-modules/application/connection-provider/connection-provider-oauth.controller';
@@ -151,7 +150,6 @@ import { JwtAuthStrategy } from './strategies/jwt.auth.strategy';
     GoogleAPIScopesService,
     GoogleApisServiceAvailabilityService,
     MicrosoftAPIsService,
-    AppTokenService,
     AccessTokenService,
     RefreshTokenService,
     LoginTokenService,