Bug (storage-vercel-blob): alwaysInsertFields option is not functioning on the vercel storage adapter

Describe the Bug

When the vercel blob storage plugin is disabled by setting enabled to false it stops inserting prefixes into collections that should have them. This means db schema drifts between environments where the plugin is disabled such as locally and environments where it is enabled such as production. From looking through the code for the storage packages it seems like this was fixed https://github.com/payloadcms/payload/commit/23a8689c11e6c7d19427fb1ea5cc710f37d19b39 for the s3 plugin but no others. The pr in my reproduction repo shows a solution by copying the code across to the other plugins: https://github.com/Surfytom/payload/pull/1

Link to the code that reproduces this issue

https://github.com/Surfytom/payload/commit/3466a272588403f857e72e3bdbd73b026b6d8857

Reproduction Steps

1. Get blank payload project with vercel blob storage plugin added
2. Disabled plugin by setting enabled option to false
3. Add prefix to a collection used by the plugin
4. Enable alwaysInsertFields option by setting it to true
5. generate types and db schema

The types and db schema shouldn't change to add the prefix field to the collection with a prefix added which is a bug. The types and schemas should have changes to add the prefix defined in the plugin options.

Which area(s) are affected?

plugin: storage-*

Environment Info

Binaries:
  Node: 22.15.0
  npm: 10.9.2
  Yarn: N/A
  pnpm: 9.0.0
Relevant Packages:
  payload: 3.73.0
  next: 16.1.1
  @payloadcms/db-mongodb: 3.73.0
  @payloadcms/db-postgres: 3.73.0
  @payloadcms/drizzle: 3.73.0
  @payloadcms/email-nodemailer: 3.73.0
  @payloadcms/graphql: 3.71.1
  @payloadcms/next/utilities: 3.73.0
  @payloadcms/plugin-cloud-storage: 3.73.0
  @payloadcms/plugin-multi-tenant: 3.73.0
  @payloadcms/richtext-lexical: 3.73.0
  @payloadcms/sdk: 3.73.0
  @payloadcms/storage-vercel-blob: 3.73.0
  @payloadcms/translations: 3.73.0
  @payloadcms/ui/shared: 3.73.0
  react: 19.2.3
  react-dom: 19.2.3
Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 25.2.0: Tue Nov 18 21:09:40 PST 2025; root:xnu-12377.61.12~1/RELEASE_ARM64_T6000
  Available memory (MB): 32768
  Available CPU cores: 8