Describe the Bug

HI, I'm trying to add date field to form builder.

Although I managed to make it work,
the data being submitted and saved to the database is always being reduced by 1 day.

e.g. 5 December 2024 will be saved as 4 December 2024
even though the one rendered on the form
before being submitted is clearly shown as 5 December 2024

This minimum reproduction code is only changed slightly from Payload 3.0 website template
by adding ShadCn DatePicker as a field to formBuilderPlugin

Changed files or directories:

• src/blocks/Form/Date/block.ts
• src/blocks/Form/Date/index.tsx
• src/blocks/Form/Date/type.ts
• src/blocks/Form/buildInitialFormState.tsx
• src/blocks/Form/fields.tsx
• src/plugins/index.ts
• src/components/ui/calendar.tsx
• src/components/ui/popover.tsx

Link to the code that reproduces this issue

https://github.com/S-Elevatio/payload-project

Reproduction Steps

• git clone https://github.com/S-Elevatio/payload-project
• cd payload-project
• pnpm install or pnpm i
• add these environment variable to .env file

  # Database connection string
  DATABASE_URI=mongodb://127.0.0.1/
  # Used to encrypt JWT tokens
  PAYLOAD_SECRET=tokens
  # Used to configure CORS, format links and more. No trailing slash
  NEXT_PUBLIC_SERVER_URL=http://localhost:3000

• pnpm run dev
• login to admin panel
• go to form tab
• add new form
• add field and choose Date
  
• save
• go to page tab
• create new page
• add form block as content
• choose the newly created form with only date field
• save
• open the page
• pick any date
  
• submit the form
• go back to the admin panel
• go to the Form Submission tab
• choose the recent submitted data
• the date shown here (and the one saved in database) will be reduced by 1 day
  
  
  

Which area(s) are affected? (Select all that apply)

db-mongodb, Not sure, plugin: form-builder

Environment Info

Binaries:
  Node: 23.3.0
  npm: N/A
  Yarn: N/A
  pnpm: N/A
Relevant Packages:
  payload: 3.5.0
  next: 15.0.4
  @payloadcms/db-mongodb: 3.5.0
  @payloadcms/email-nodemailer: 3.5.0
  @payloadcms/graphql: 3.5.0
  @payloadcms/live-preview: 3.5.0
  @payloadcms/live-preview-react: 3.5.0
  @payloadcms/next/utilities: 3.5.0
  @payloadcms/payload-cloud: 3.5.0
  @payloadcms/plugin-form-builder: 3.5.0
  @payloadcms/plugin-nested-docs: 3.5.0
  @payloadcms/plugin-redirects: 3.5.0
  @payloadcms/plugin-search: 3.5.0
  @payloadcms/plugin-seo: 3.5.0
  @payloadcms/richtext-lexical: 3.5.0
  @payloadcms/translations: 3.5.0
  @payloadcms/ui/shared: 3.5.0
  react: 19.0.0
  react-dom: 19.0.0
Operating System:
  Platform: win32
  Arch: x64
  Version: Windows 11 Home
  Available memory (MB): 32175
  Available CPU cores: 16