Offline FTF for ITk - do not use new tools and tracklets by default to fix GPU implementation

As title says, the GPU way of running FTF for ITk as an offline algorithm is broken as the GPU algorithm uses triplets of SPs from seeding, not tracklets. Furthermore, bringing back the flag functionality, but only including the flags for the ITkFTFPass as that is the only time the offline FTF will need to worry about these tools and tracklets (only for ITk). As a result, I am changing the CPU offline FTF ART tests to still use these new tools and tracklets. These tests only run in main.

This MR targets main as the changes here are for ITk only.

Tagging @demelian, @aporeba, @baines, @jmasik, @tstreble