Japanese idol names are inconsistent

Mini idol objects include a japanese_name attribute. For Muse members, this name includes a space (U+0020) between the family and given names; for all Aquors members except Dia, it is instead a full-width space (U+3000); for Dia and all others, there is no space. These should be made consistent, ideally with no space in any of them to match the standard Japanese rendering.

Find the mini idol object definitions and inspect the japanese_name values for Muse, Aqours, Dia, and the remaining members. Normalize the names to the requested no-space rendering, then verify that every affected idol uses the same format.

Written by the indexing model from the issue text.