It might be light's out for "The Great Christmas Light Fight" ... TMZ has learned. A source with direct knowledge tells us ABC has not picked up the holiday reality TV competition for this season. Our insider explains the miniseries is shot a year in advance ... and it was not shot last December. The show's been a seasonal staple on ABC since 2013, and has aired every year since. They even made Halloween-themed specials in 2014 and again in 2023. Our source clarified that the program isn't