repl: Render markdown output from kernels (#15742)

<img width="1268" alt="image"
src="https://github.com/user-attachments/assets/73e03a28-f5e3-4395-a58c-cabd07f57889">

Release Notes:

- Added markdown rendering for Jupyter/REPL outputs. Push Markdown from
Deno/Typescript with `Deno.jupyter.md` and in IPython use
`IPython.display.Markdown`.

Cargo.lock

@@ -8749,6 +8749,7 @@ dependencies = [
  "language",
  "languages",
  "log",
+ "markdown_preview",
  "multi_buffer",
  "project",
  "runtimelib",