Reverts zed-industries/zed#7868

@nicoburns: this seems to break text input in the chat panel, so
reverting this for now.

<img width="365" alt="image"
src="https://github.com/zed-industries/zed/assets/482957/fc47eee9-6049-49c2-be2c-fb91f7d35caf">

It would be great to upgrade to Taffy 0.4 though, so we should figure
out why that particular input breaks.

Release notes:

- N/A