fix(text wrap): make UTF-8 aware

[zbaylin]

Now that we have @OhadRau's revery-text-wrap in the monorepo, we need to make it UTF-8/Unicode aware so that we dont split on arbitrary byte boundaries. This was a big pain point when I was writing font-fallback, and this PR should fix it 👍

[zbaylin]

I should also note I made the measuring much faster because before we were iterating over each character in a string and measuring it, rather than measuring the whole string itself. This is much better from a caching point of view since we arent measuring the same string twice but in different ways. For measuring characters, I just create a singleton using Zed, which should be constant time.

[github-actions[bot]]

I have updated your lock dirs and formatted the code. Please @zbaylin pull the last commit before pushing any more changes.

[OhadRau]

Awesome! Changes look great