[Feature Request] Allow Adjusting Code Box Height in Expression Mode

[xhzkp]

In expression mode, the code box height is a bit small (as shown in the image below). Sometimes, I don’t want to enter the full code editing mode.

Adding a resize handle in the bottom right corner would make it more convenient, similar to the final demonstration.
The code box height automatically increases as the number of lines grows, and a scrollbar appears when it reaches the maximum height.
The code box should remember its previous height when reopened next time (the official code node supports this).