### What?
**V2 Update** – Adds support for using group fields when filtering the
list view.
### Why?
This feature was originally introduced in V3. Due to popular demand from
V2 users, we are backporting it into V2.
### How?
Updates the `WhereBuilder` to map over fields within a group and prefix
them with the parent field name. Similar to V3 PR
[here](https://github.com/payloadcms/payload/pull/6647).
#### Review & Testing
Use the `admin` test suite and the `posts` collection to see this
change.
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