x11/nvidia-settings: the port had been updated and improved (+)

- Update to version 470.74 to match the driver port itself
- Add dependency on `print/harfbuzz', per stage Q/A report
- Fix patching of `nvidia-settings.desktop', particularly,
  squish that ugly double space in the `Categories' line
- When passing NV_VERBOSE for our usual verbose build, set
  it explicitly to 1 (one) to indicate the intention better