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