fix(ui): bulk upload issues (#13413)

### What?
This PR contains a couple of fixes to the bulk upload process:
- Credentials not being passed when fetching, leading to auth issues
- Provide a fallback to crypto.randomUUID which is only available when
using HTTPS or localhost

### Why?
I use [separate admin and API URLs](#12682) and work off a remote dev
server using custom hostnames. These issues may not impact the happy
path of using localhost, but are dealbreakers in this environment.

### Fixes #
_These are issues I found myself, I fixed them rather than raising
issues for somebody else to pick up, but I can create issues to link to
if required._

packages/ui/src/elements/BulkUpload/FormsManager/reducer.ts

@@ -1,5 +1,7 @@
 import type { FormState, UploadEdits } from 'payload'
 
+import { v4 as uuidv4 } from 'uuid'
+
 export type State = {
   activeIndex: number
   forms: {
@@ -50,7 +52,7 @@ export function formsManagementReducer(state: State, action: Action): State {
       for (let i = 0; i < action.files.length; i++) {
         newForms[i] = {
           errorCount: 0,
-          formID: crypto.randomUUID(),
+          formID: crypto.randomUUID ? crypto.randomUUID() : uuidv4(),
           formState: {
             ...(action.initialState || {}),
             file: {