[v2.1.3]Fixed export errors

Thank you for using VRoid Studio. VRoid Studio v2.1.3 update concerns the following: VRoid Editing ■ Fixes [list] [*] Fixed an issue where repeatedly renaming items under certain conditions caused thumbnail display errors [*] Fixed an issue where the app would become unresponsive if color calibration was applied after using the bucket tool under certain conditions [/list] XWear and dress-up feature ■ Fixes [list] [*] Fixed a VRM export issue that occurred when dressing a model where the Hips were directly under the RootNode with an outfit where the Hips were under Armature, etc. [*] Fixed an issue preventing VRM export for certain VRM body models [/list] We will keep looking out for your comments and feedback and work towards new updates. Thank you for your continued support.