Describe the Bug

When creating a textField with hasMany: true in the Mongo DB version of payload, filtering with the contains operator is not possible and the admin view somewhat crashes.

Looking at the source code the issue seems to come from payload/packages/db-mongodb/src/queries/sanitizeQueryValue.ts line 451. Here the text field hasMany is not handled and if that field is an array of strings instead of a string formattedValue.replace() is not a function.

Link to the code that reproduces this issue

https://github.com/AlexRoosWork/text-field-has-many-contains-filter

Reproduction Steps

To reproduce the changes, add some values to the sample field of the users collection. Then in the users list view, add a filter for the sample field with the contains operator and add some value in the value. On enter the admin view crashes.

Which area(s) are affected?

db: mongodb

Environment Info

Binaries:
  Node: 24.13.0
  npm: 11.6.2
  Yarn: 4.11.0
  pnpm: 10.28.0
Relevant Packages:
  payload: 3.76.1
  next: 15.4.11
  @payloadcms/db-mongodb: 3.76.1
  @payloadcms/graphql: 3.76.1
  @payloadcms/next/utilities: 3.76.1
  @payloadcms/richtext-lexical: 3.76.1
  @payloadcms/translations: 3.76.1
  @payloadcms/ui/shared: 3.76.1
  react: 19.2.1
  react-dom: 19.2.1
Operating System:
  Platform: linux
  Arch: x64
  Version: #1-NixOS SMP PREEMPT_DYNAMIC Fri Feb  6 15:55:51 UTC 2026
  Available memory (MB): 64022
  Available CPU cores: 20