Fix for #2371 : Paste Unicode.

Pull Request check-list

• Does make -j8 test (UNIX) or vcbuild test nosign (Windows) pass with this change (including linting)?
• Is the commit message formatted according to [CONTRIBUTING.md][0]?
• If this change fixes a bug (or a performance problem), is a regression test (or a benchmark) included?

Affected core subsystem(s)

see #2371 (closed) tty input: lib/readline.js

Description of change

We have to refresh line if we received final part of unicode character.

Question: I can't find tests about pasting to console, can someone point me so i can make test for this?

thank you!