BUG EagerLoadedList throws error when filtering an empty list

[beerbohmdo]

Module version(s) affected

5.4, 6.0, 6.1

Description

I think EagerLoadedList should be kind of dropin setting.

But currenly these calls behave different:

$item = Foo::get()->first()?->Relation()->find('Column', 'Value');
$item = Foo::get()->eagerLoad('Relation')->first()?->Relation()->find('Column', 'Value');

The later will throw an error Can't filter by column 'Column' when the Relation is empty.

Because the normaliseFilterArgs calls canFilterBy which will fail if the underlying list is empty.
https://github.com/silverstripe/silverstripe-framework/blob/6/src/ORM/EagerLoadedList.php#L619

The implementation in ArrayList does not throw an error either.

How to reproduce

See above.

Possible Solution

• FIX EagerLoading: Don't throw unknown column error when list is empty #11909

Additional Context

No response

Validations

• Check that there isn't already an issue that reports the same bug
• Double check that your reproduction steps work in a fresh installation of silverstripe/installer (with any code examples you've provided)