套装上的组件词缀功能有bug

原本就是套装，有[套装1][套装2]等属性的，就可以在原有位置上删掉旧属性和添加新属性，但完全删掉，编辑器就会卡死；
给套装(原本没有绿色词缀的位置)添加[套装1][套装2]等属性，保存后并不会写入，再次打开存档刚才的属性消失了，编辑完直接进游戏也是并不存在的；
这导致了新建的底材，添加的套装绿词缀都是无用功；
但底材又不能直接修改，只能新建……

No files or tests are named. Start by reproducing both cases in the editor: remove all existing set affixes, then add set affixes to a base item without green-affix slots; save, reopen the character, and enter the game. Done means removal no longer hangs and newly added set affixes persist and appear in-game.

Written by the indexing model from the issue text.