text: Title: Unblock examples/surface_timeseries_.py for the gallery
  Body: ## 🧰 Task
  
  Reference: https://github.com/napari/napari/pull/7487#issuecomment-2668444863
  
  Depends on #7487.
  
  The surface timeseries example doesn't get built right now because at one point, nilearn was incompatible with recent numpy. That is no longer the case so we should build it because it is a badass example.