assistant: try copy notebook else warn

[Borda]

Before submitting

• Was this discussed/approved via a Github issue? (no need for typos and docs improvements)
• Did you make sure to update the docs?
• Did you write any new necessary tests?

What does this PR do?

try to make a notebook copy and if fail warn about the error and not crash...
this helps in multiple directions:

• allow skip failing notebooks so as not to block docs build
• add notebook name so we can track back with multi-job build
• still can enforce full docs build with treating warnings as error

PR review

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in Github issues there's a high chance it will not be merged.

Did you have fun?

Make sure you had fun coding 🙃

[codecov]

Codecov Report

Merging #288 (3962aaa) into main (dc01f0b) will decrease coverage by 1%.
The diff coverage is 17%.

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #288   +/-   ##
===================================
- Coverage    72%    71%   -1%     
===================================
  Files         2      2           
  Lines       394    399    +5     
===================================
+ Hits        284    285    +1     
- Misses      110    114    +4