Well OG Lola's design is hardly busty, she just has a minor feminine curve. Here they just made her flat. Beyond that, she's also a cartoon character, so it's hardly like they're getting in the way.

Moot point anyway, as they already stated the change was to make her look like a "strong, capable female character." Because the less feminine you look, the stronger you are, apparently.

Remember how the climax of the first Space Jam revolved around how people in toon world could do literally anything?