Optional Parameters For Collection Expressions.

[andreweberle]

Now that we have Collection Expressions which is such clearer IMO, it would be pretty cool if Collection Expressions were supported when defining optional parameters, especially when in this case, the array is containing a bunch of enums.

public Task<List<Order>> GetOrdersByDateTimeAsync(
    DateTimeWithZone startDateTime,
    DateTimeWithZone endDateTime,
    string search = "",
    ProductSearchFilter[] productFilter = [ProductSearchFilter.None],
    CancellationToken cancellationToken = default);

[HaloFour]

See: #7484