fix: download linked objects in a WFS using "resolvedepth"

[emanuelaepure10]

Using "resolvedepth" when trying to download data via WFS is now downloading the linked objects. As the requested hits to a WFS is better to be setup to UNKNOWN_SIZE, so the size comes as well to be always UNKNOWN_SIZE, the code related to hits and size has been removed and the related methods have been changed accordingly.

ING-4128 Closes #1084