Highly unlikely, but IANAL.
First, I don't think that a tiny icon with a humorous reference to a classic video game may be considered a breach of copyright at all.
Second, Namco opened the rights to Pac-Man and a few other games a while ago, explicitly allowing artwork that would usually fall under "derivative works":
https://www.animenewsnetwork.com/news/2015-03-31/bandai-namco-opens-rights-to-pac-man-80s-game-properties/.86558