Method DeleteWithPurgeAsync(IEnumerable<long>, int, IProgress<PurgeProgress>?, CancellationToken, long?)

Delete objects with background purge and progress reporting.
Marks objects for deletion, then purges them in batches with progress callback.

public Task DeleteWithPurgeAsync(IEnumerable<long> objectIds, int batchSize = 10, IProgress<PurgeProgress>? progress = null, CancellationToken cancellationToken = default, long? trashParentId = null)