[BUG][UI][playground] Sporadically losing focus inside of playground text editors

[cephalization]

Something causes the message and tool editors within playground to remount, and reset your cursor / focus occasionally.

I notice it the most frequently when:

• Load a prompt into playground
• Add / edit a tool
• While typing your cursor will snap to the beginning of the input

[cephalization]

Appears to be related to this uiwjs/react-codemirror#694

It becomes much easier to replicate once we load the playground up with instances, lining up with the theory that it is caused by renders that take too long