HENDERSON, Nev. — The Raiders’ 2026 NFL Draft had barely just concluded, and the focus was not centered on celebrating an impressive haul of new talent; instead, the focus was on the undrafted free agent (UDFA) class and rookie camp. A message, though not explicitly stated, resonated from the ownership, and the office of General Manager John Spytek and Klint Kubiak: the time for celebrating would come after on-field success; for now, it was the million little things that go into building a champion on the field. GM John Spytek, Fernando Mendoza, Klint Kubiak | Darrell Craig Harris, On SI The new look Raiders are all on the same page. With each new addition to the staff, or those retained because they shared the new philosophy, it was unspoken, but clear. In the past, there were celebrations around this franchise for April success (albeit limited), even in March, May, and June.…