Add fields property to FieldSet class

[AIC-BV]

Seems to work with a small fix, even with fieldsets within fieldsets!

Out of the box the fieldsets rendered empty — legend only, zero fields. Root cause: FieldSet::init() calls fillFromConfig(['fields']), but WidgetBase::fillFromConfig() only fills properties that exist on the class (property_exists check), and FieldSet declares public $form but not public $fields. So the inner form always got fields => null, silently. I added public $fields; to FieldSet.php:27 locally and everything came to life. Claude

The dark scheme might need some adjusting

@media (prefers-color-scheme: dark) {
    .fieldset {
        background: #000;
    }
}

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[mjauvin]

Thanks, I merged your changes and removed the (now unused) $form property.

Can you test again to make sure?

[AIC-BV]

Thanks, I merged your changes and removed the (now unused) $form property.

Can you test again to make sure?

Works 👍