fix(shell): prevent Ctrl+W from overwriting system clipboard [WIP]#1686

wbxl2000 wants to merge 1 commit intoMoonshotAI:mainMoonshotAI/kimi-cli:mainfrom

wbxl2000:fix/ctrl-w-clipboard-pollutionwbxl2000/kimi-cli:fix/ctrl-w-clipboard-pollutionCopy head branch name to clipboard