test: ensure consistent Julia environments in live job tests

[mortenpi]

JuliaHub jobs have a fixed Julia version (1.9 presently), so you need to make sure you submit a Manifest.toml that is compatible with it. However, the current live tests sometimes resolve things with the running Julia version, and we run the tests with a whole range of Julia versions. With nightly Julia builds, this now causes issues (specifically, the StyledStrings standard library is not available on older Julia versions).

• Use script""noenv for all the tests that submit simple scripts. Standard script"" attaches the currently running environment, which may declare dependencies that are not valid when running with a different Julia version. Those tests don't require any packages.
• Turn the distributed tests into an appbundle with a pre-resolved environment.
• Update the job1 manifest to 1.9.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (28e105c) 78.49% compared to head (dd61b3b) 40.74%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #47       +/-   ##
===========================================
- Coverage   78.49%   40.74%   -37.75%     
===========================================
  Files          16       16               
  Lines        2241     2216       -25     
===========================================
- Hits         1759      903      -856     
- Misses        482     1313      +831     

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[krynju]

We can also attach only Project.toml for testing as the job code will resolve the Project.toml into a valid Manifest.toml
This should cover most cases (I think only these stdlib changes could affect it somehow)

This works too, so feel free to use the above if you think it could help

[mortenpi]

We can also attach only Project.toml for testing as the job code will resolve the Project.toml into a valid Manifest.toml
This should cover most cases (I think only these stdlib changes could affect it somehow)

One of the tests specifically submits the same job twice, once with a Manifest and then without, and detects the environment difference.