chore: remove unused oauth authorize result types

The AuthorizeResult union and its guards were never wired into the approve
flow, so knip reported the file as dead. Reintroduce it alongside the error
state that uses it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

apps/studio/data/oauth-apps/oauth-apps-authorize.types.ts

@@ -1,26 +0,0 @@
-import type { OAuthAppsAuthorizeApproveResponse } from './oauth-apps-authorize-approve-mutation'
-
-export type ProjectRoleFailure = {
-  projectRef: string
-  projectName: string
-  userRole: string
-  missingScopes: string[]
-}
-
-export type AuthorizeResult =
-  | { status: 'success'; data: OAuthAppsAuthorizeApproveResponse }
-  | { status: 'role_validation_failed'; failures: ProjectRoleFailure[] }
-  | { status: 'error'; code: string; message: string }
-
-export const isAuthorizeSuccess = (
-  result: AuthorizeResult
-): result is Extract<AuthorizeResult, { status: 'success' }> => result.status === 'success'
-
-export const isRoleValidationFailure = (
-  result: AuthorizeResult
-): result is Extract<AuthorizeResult, { status: 'role_validation_failed' }> =>
-  result.status === 'role_validation_failed'
-
-export const isAuthorizeError = (
-  result: AuthorizeResult
-): result is Extract<AuthorizeResult, { status: 'error' }> => result.status === 'error'