Reposition completion menu in case of ghost text.

[pwang2]

As screenshot below, is it possible to position the completion menu to the top when there is ghost_text item from source like copilot?

any other workflow suggestions? Currently the ghost text is overlapped with the menu, try to figure out if we can hide the menu temporarily(like a key hold to hide, release to show).

VSCode

Neovim with nvim-cmp