`:` is not supported on multi-character trigger for suggestion menus

[ClementEXWiki]

What’s broken?

When defining a SuggestionMenuController with a multi-character trigger, colons prevent the menu from ever being triggered.

What did you expect to happen?

The menu should open fine with a colon.

Steps to reproduce

<SuggestionMenuController
      triggerCharacter={"img:"}
      getItems={...}
      suggestionMenuComponent={...}
    />

Note that both img# and : alone work too.

BlockNote version

v0.51.4

Environment

Firefox 152.0.4, Fedora 44

Additional context

No response

Contribution

• I'd be interested in contributing a fix for this issue

Sponsor

• I'm a sponsor and would appreciate if you could look into this sooner than later 💖

[Gxrvish]

@YousefED I attached a fixing PR link, Please have a look!