same end state as clicking the first row by hand — hovering other rows no longer steals the preview until you actually click one. clicking a different row still jumps straight to it and relocks there; clicking the locked row again releases it back to hover-browsing. games are excluded (nothing to browse), matched via the game-embed class rather than page context so it stays correct no matter which page a game was launched from.
the .. row has no image/video/text of its own, so the preview fell through to the blank-everything branch — most noticeable on video projects, where the video would stop and vanish. now non-preview rows just leave whatever was last shown in place.