Okay this is a reach. The "original" song by Jordan Vincent is an EDM dance song whereas Smith and Normani's is a dance-pop and lower tempo. The only similarly is the phrase "Dancing with a stranger" though Jordan actually singles "dancing with strangers". Although both songs repeat the phrase multiple times as part of a refrain, you can't copyright a phrase and others from creating a song using it. Is it similar? Kinda. Were Stargate, who produced Normani and Smith's song, influenced by the original? Most likely yes. Does the Smith and Normani song actually sound like or sample any of the original? Nah.