test: refactor int tests to use initPayloadInt which reduces boilerplate

test/custom-graphql/int.spec.ts

@@ -1,8 +1,7 @@
 import type { Payload } from '../../packages/payload/src/index.js'
+import type { NextRESTClient } from '../helpers/NextRESTClient.js'
 
-import { getPayload } from '../../packages/payload/src/index.js'
-import { NextRESTClient } from '../helpers/NextRESTClient.js'
-import { startMemoryDB } from '../startMemoryDB.js'
+import { initPayloadInt } from '../helpers/initPayloadInt.js'
 import configPromise from './config.js'
 
 let restClient: NextRESTClient
@@ -10,9 +9,7 @@ let payload: Payload
 
 describe('Custom GraphQL', () => {
   beforeAll(async () => {
-    const config = await startMemoryDB(configPromise)
-    payload = await getPayload({ config })
-    restClient = new NextRESTClient(payload.config)
+    ;({ payload, restClient } = await initPayloadInt(configPromise))
   })
 
   afterAll(async () => {

test/custom-graphql/payload-types.ts

@@ -53,7 +53,3 @@ export interface PayloadMigration {
   updatedAt: string
   createdAt: string
 }
-
-declare module 'payload' {
-  export interface GeneratedTypes extends Config {}
-}