Fix: Convert help example results to text

[NotTheDr01ds]

Description

Converts help example results to text in build-command-page. This prevents an item_not_found error when attempting to help <command> on many legitimate commands.

Fixes #12073

User-Facing Changes

Tests + Formatting

After Submitting

[fdncred]

Seems to be working now. Thanks!

Separately, we need to figure out how to make the std help respect the theme coloring. I noticed help loop has different colors than help loop after using std help.

[NotTheDr01ds]

Separately, we need to figure out how to make the std help respect the theme coloring. I noticed help loop has different colors than help loop after using std help.

Odd - I'm not able to reproduce that. I'm using the ashes theme and both help loop and std help loop are honoring the theme.

std help is just running the examples through nu-highlight, at least on the happy path I tested, and nu-highlightalso seems to be honoring the theme for me.

If you can provide any more info on how to reproduce (maybe open an issue), I'll be happy to take a look. I may not be able to handle Rust changes (yet), but I can certainly take a stab at std stuff ;-).

[fdncred]

Here's what I see. Notice the Flags: and Parameters: are different colors.

Built In Help

Script Help

[NotTheDr01ds]

@fdncred Ah, got it - So the "Examples" is matching the theme, but the rest of the help isn't.

I'll try to take a look, but that will probably also involve needing to figure out how the internal help implementation does it.

[fdncred]

ideally, i think both helps should look identically. maybe others disagree?

[fdncred]

Let's land this one and put the coloring one in another PR. Thanks!