Fix config creation during printing

[kubouch]

Description

This reverts commit 7f758d3 and re-implements it.

This fixes #9264 without cloning the engine state and using merge_env() by using both the config in permanent state and runtime stack.

Previous solution #9304 required cloning engine state for every print which can get substantial if you have a lot/large values stored in the engine. Also, merge_env() is intended to be used only at the separation between eval and parsing. I hope this approach is cleaner.

This works now

def ctxIssue [] { $env.config.color_config.header = blue; print (ls) }; ctxIssue

User-Facing Changes

Tests + Formatting

After Submitting

[fdncred]

I tested this on MacOS and it seems to work great! Good work @kubouch.

Since I'm going to be out for a week, I'd probably go ahead and land it, but it does need to be tested in Windows with PR 519 in nu_scripts as I described in core-team.

[fdncred]

Before going out the door, I tested this on Windows and it works great! Thanks!