"MissingFile: No files were uploaded" error is raised when using payload.create to upload an image when imageSizes is enabled.

Describe the Bug

I've written a seeder script to insert db records. It can be found in the context of a minimum example here:
https://github.com/wspsycle/payload-cms-upload-error/blob/main/src/seed/works/seed-works.ts

Running yarn run seed, the script gets called. The script calls payload.create to upload an image and create a record. Previously it worked. However, since adding upload.imageSizes to my Works model, now when I run yarn run seed, I see an error about the image file not existing, when it does exist:

Seeding...
Seeding works...
[✓] Pulling schema from database...
[16:03:53] WARN: No email adapter provided. Email will be written to console. More info at https://payloadcms.com/docs/email/overview.
Seeding work "Acme Co. Website"...
Uploading file "beach.jpg" to "/Users/mac1/Desktop/upload-test/src/seed/works/beach.jpg"
/Users/mac1/Desktop/upload-test/node_modules/payload/src/uploads/generateFileData.ts:154
      throw new MissingFile(req.t)
            ^


MissingFile: No files were uploaded.
    at generateFileData (/Users/mac1/Desktop/upload-test/node_modules/payload/src/uploads/generateFileData.ts:154:13)
    at createOperation (/Users/mac1/Desktop/upload-test/node_modules/payload/src/collections/operations/create.ts:162:63)
    at async seedWork (/Users/mac1/Desktop/upload-test/src/seed/works/seed-works.ts:41:16)
    at async seedWorks (/Users/mac1/Desktop/upload-test/src/seed/works/seed-works.ts:61:3)
    at async seed (/Users/mac1/Desktop/upload-test/src/seed/seed.ts:5:3) {
  data: null,
  isOperational: true,
  isPublic: true,
  status: 400,
  [cause]: null
}

Node.js v22.15.0

The expectation I have is that payload.create continues to work even when upload.imageSizes is enabled.

Link to the code that reproduces this issue

https://github.com/wspsycle/payload-cms-upload-error

Reproduction Steps

• Install dependencies with yarn
• Run seed script with yarn run seed
• See error MissingFile: No files were uploaded.

Which area(s) are affected?

Not sure, area: core

Environment Info

Binaries:
  Node: 22.15.0
  npm: 10.9.2
  Yarn: 1.22.21
  pnpm: N/A
Relevant Packages:
  payload: 3.84.1
  next: 16.2.3
  @payloadcms/db-sqlite: 3.84.1
  @payloadcms/drizzle: 3.84.1
  @payloadcms/graphql: 3.84.1
  @payloadcms/next/utilities: 3.84.1
  @payloadcms/richtext-lexical: 3.84.1
  @payloadcms/translations: 3.84.1
  @payloadcms/ui/shared: 3.84.1
  react: 19.2.4
  react-dom: 19.2.4
Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 25.1.0: Mon Oct 20 19:34:03 PDT 2025; root:xnu-12377.41.6~2/RELEASE_ARM64_T8112
  Available memory (MB): 16384
  Available CPU cores: 8

Start with the reported stack trace in src/uploads/generateFileData.ts and the create operation in src/collections/operations/create.ts, then compare them with the reproduction in src/seed/works/seed-works.ts. Run yarn run seed against the linked minimum example and verify that payload.create can upload the image when upload.imageSizes is enabled without raising MissingFile.