Function createDroppedEffect

createDroppedEffect(
    parent: Document,
    effect: ActiveEffect,
    event: DragEvent,
): Promise<any>
Shared drop handler used by BMS sheets so a dropped ActiveEffect ends up either:
- linked (default): origin → source AE uuid; auto-forwards from source
- standalone (Ctrl/Cmd-drag): origin cleared; static copy of source data
Parameters
- parent: Document
  Actor or Item that will own the new AE
- effect: ActiveEffect
  The source ActiveEffect being dropped
- event: DragEvent
  The drop event (drag data carries bmsStandalone)
Returns Promise<any>
- Defined in module/helpers/effects.mjs:46