Determine whether an active effect is sourced from a party actor (async version).
Checks both the effect's direct parent (for party-held records) and its origin UUID.
Parameters
effect: ActiveEffect
The active effect to check
OptionalpartyUuid: string
Optional specific party UUID to match against;
if omitted, returns true for any party-sourced effect
Returns Promise<boolean>
True if the effect is held by or sourced from a party actor
Determine whether an active effect is sourced from a party actor (async version). Checks both the effect's direct parent (for party-held records) and its origin UUID.