[REQUEST] Allow not choosing the prompt completion item

[Supreeeme]

Feature

When typing something in the prompt with autocomplete on, kakoune will automatically select the option that is closest to what you typed. But sometimes I don't want that option, because i.e. I'm trying to trigger a hidden command or something. Currently there is no way to avoid this.

There is actually precedent for this in insert mode completion, where you can do <c-p> when on the first option and you will have no completion selected. I would prefer an explicit "ignore completions" binding or something though.

Usecase

No response

[mawww]

You can do <c-v><space> to force inserting a space without triggering the auto-insertion in this case, please also not that the menu style completions (which auto-select a completion without needing to press tab) are opt-in per commands/comopletion and should only be enabled when the not using a completion option does not make sense. So if a command does use menu completion but should not, we should fix this.