Search filters by folder URI (parts of target folder path)

Make it possible to find filters by the full target folder path.

e.g. if a filter moves mail to the folder "Lists/Social/twitter" we can search for it by selecting Target folder URI and typing "lists/social" in the search field:


<img width="780" height="233" alt="Image" src="https://github.com/user-attachments/assets/ed28bdc4-d070-4e75-929c-15ab20041f88" />
