### What?
This PR updates the `from` field in `plugin-redirects` to add `unique:
true`.
### Why?
If you create multiple redirects with the same `from` URL — the
application won't know which one to follow, which causes errors and
unpredictable behavior.
### How?
Adds `unique: true` to the plugin injected `from` field.
### Migration Required
This change will require a migration. Projects already using this plugin
will need to:
- Ensure there are no duplicate `from` values in their existing
redirects collection.
- Remove or modify any duplicate entries before applying this update.
Fixes#12959
50c2f8bec2