The "SKIDROW" portion of the filename indicates it is a cracked version of the game software.
The string you mentioned refers to the digital file for the DLC, specifically a version released by the "scene" group SKIDROW . PAW.Patrol.Grand.Prix.Pup.Treat.Arena-SKIDROW.t...
In this expansion, the pups are no longer just racing for the finish line; they are competing in high-stakes "party battles" to collect the most pup treats before time expires. The "SKIDROW" portion of the filename indicates it