chore!: simplify api handler (#6910)

Removes PayloadRequestWithData in favour of just PayloadRequest with
optional types for `data` and `locale`

`addDataAndFileToRequest` and `addLocalesToRequestFromData` now takes in
a single argument instead of an object

```ts
// before
await addDataAndFileToRequest({ request: req })
addLocalesToRequestFromData({ request: req })

// current
await addDataAndFileToRequest(req)
addLocalesToRequestFromData(req)
```

---------

Co-authored-by: Paul Popus <paul@nouance.io>

test/database/int.spec.ts

@@ -1,6 +1,6 @@
 import type { PostgresAdapter } from '@payloadcms/db-postgres/types'
 import type { NextRESTClient } from 'helpers/NextRESTClient.js'
-import type { Payload, PayloadRequestWithData, TypeWithID } from 'payload'
+import type { Payload, PayloadRequest, TypeWithID } from 'payload'
 
 import { migratePostgresV2toV3 } from '@payloadcms/db-postgres/migration-utils'
 import { sql } from 'drizzle-orm'
@@ -270,7 +270,7 @@ describe('database', () => {
         const req = {
           payload,
           user,
-        } as PayloadRequestWithData
+        } as PayloadRequest
 
         await initTransaction(req)
 
@@ -320,7 +320,7 @@ describe('database', () => {
         const req = {
           payload,
           user,
-        } as PayloadRequestWithData
+        } as PayloadRequest
 
         let first
         let second
@@ -373,7 +373,7 @@ describe('database', () => {
         const req = {
           payload,
           user,
-        } as PayloadRequestWithData
+        } as PayloadRequest
 
         await initTransaction(req)
 
@@ -555,7 +555,7 @@ describe('database', () => {
           locale: 'es',
         })
 
-        const req: PayloadRequestWithData = {} as PayloadRequestWithData
+        const req: PayloadRequest = {} as PayloadRequest
         await initTransaction(req)
 
         await migratePostgresV2toV3({