Here are the steps to fix ant design Select component not copiable issue using pnpm patch.

1. pnpm patch antd

╭─root@HP ~/personal/antd-select-copiable ‹master›
╰─# pnpm patch antd
You can now edit the following folder: /tmp/e783e387c49ac2b86aeb04c9235729e8

Once you're done with your changes, run "pnpm patch-commit /tmp/e783e387c49ac2b86aeb04c9235729e8"

2. open folder and edit code

code /tmp/e783e387c49ac2b86aeb04c9235729e8

find https://github.com/ant-design/ant-design/issues/40421,
delete code userSelect: 'none'

3. pnpm patch-commit antd

pnpm patch-commit /tmp/e783e387c49ac2b86aeb04c9235729e8

4. pnpm patch rc-select

╭─root@HP ~/personal/antd-select-copiable ‹master●›
╰─# pnpm patch rc-select
You can now edit the following folder: /tmp/e2859d70b36cfa97375a194ae4ea0db0

Once you're done with your changes, run "pnpm patch-commit /tmp/e2859d70b36cfa97375a194ae4ea0db0"

5. open folder and edit code

code /tmp/e2859d70b36cfa97375a194ae4ea0db0

find if (event.target !== inputRef.current && !inputMouseDown && !( 'combobox' && disabled))

replace to if (event.target !== inputRef.current && !inputMouseDown && !disabled)

6. pnpm patch-commit rc-select

pnpm patch-commit /tmp/e2859d70b36cfa97375a194ae4ea0db0

7. remove vite cache

rm -rf node_modules/.vite

8. restart dev server and see if it's successful.