Implement a max height on code blocks

Context

In the chat in the IDE it's possible to send and receive questions about code. These are displayed as code blocks.

Problem to solve

It's possible that the code blocks displayed in the chat are especially long, so much so that it becomes difficult to understand what's going on in the chat. E.g. I can't see the other messages, for example to reference the specific question I asked, without lots of scrolling.

Suggested solution

Implement a sensible max height that a code block can be. When the code block exceeds the max height, the user can scroll vertically in the code block.

We had this discussion for the in-product chat, and I'm not sure what the final max-height was but we could probably adopt the same for the IDE. @dmishunov should be able to provide details on the in-product implementation.