Close emoji autocomplete compenent when the first character after : is a space.

Release notes

I propose a setting to disable the automatic generation of emoji in the markdown editor when :is followed by space.

Problem to solve

In English there is no space after : but it's a orthographic rules for French people to have a space before and after it. When we type : we get the emoji autocomplete displayed, but that's very annoying because we sometimes type fast, use the Enter key and insert a random emoji in our text.

Intended users

All the people who redact issue / backlog items with a langage who use space punctuation before and after : such a French.

-->

User experience goal

When the user type : followed by a space, the auto complete component must be closed.

Proposal

The auto complete handle space to promote result with a space, for example when there is multiple word like in 🚯 but when the user type a space as first character after a : and don't even start with a word, we can suppose that he don't want to search for multiple words emoji but just :.

What does success look like, and how can we measure that?

French people will not get frustrated because the autocomplete will not pop for nothing :)