v1.2.21.2404

1. Fixed a V2Ray/Vless conversion bug (introduced in v1.2.21.2401)
2. Fixed a layout error in the file content view button
3. Added a 'Copy' button to some confirmation prompts

IOS/TvOS AppStore: (Search Keywords: karing vpn) https://apps.apple.com/us/app/karing/id6472431552