Fix User column searchable() callback for Filament 5.7.8

[swilla]

Details

Filament table TextColumn::searchable() first argument is a condition (bool|array|string|Closure), not the search query. The second argument (query) is the custom search callback.

LibraryItemPermissionsRelationManager passed a function ($query, $search) as the first argument. Filament therefore treated it as isSearchable and evaluated it during table render.

In Filament 5.7.8 that evaluation injects $query as null, which crashes host apps (e.g. Communities-of-Excellence ResourceLibraryContractTest) with:

Call to a member function where() on null

at LibraryItemPermissionsRelationManager.php in the searchable closure.

Fix

Pass the custom user-name search via the named query: argument so:

• the column remains searchable
• the SQL callback runs only during search, with a real query builder

->searchable(query: function ($query, $search) {
    return $query->where(/* ... */);
})

Release

This needs a tagged release (v1.4.1) so Packagist consumers can bump. Communities PR https://github.com/TappNetwork/Communities-of-Excellence/pull/193 will consume this commit until that release is published.