Replace selected usage of SIMULATION_JOB with FORWARD_MODEL

[berland]

Wherever there are no arguments passed directly from the config line, FORWARD_MODEL is used instead of SIMULATION_JOB.

Issue
Resolves #my_issue

Approach
Short description of the approach

(Screenshot of new behavior in GUI if applicable)

• PR title captures the intent of the changes, and is fitting for release notes.
• Added appropriate release note label
• Commit history is consistent and clean, in line with the contribution guidelines.
• Make sure tests pass locally (after every commit!)

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Create Backport PR to latest release

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.47%. Comparing base (47c7f5f) to head (f7faeee).
Report is 18 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8698      +/-   ##
==========================================
+ Coverage   90.96%   91.47%   +0.50%     
==========================================
  Files         343      343              
  Lines       21286    21286              
==========================================
+ Hits        19363    19471     +108     
+ Misses       1923     1815     -108     

Flag	Coverage Δ
cli-tests	38.76% <ø> (?)
gui-tests	72.31% <ø> (-3.93%)	⬇️
integration-tests	?
performance-tests	49.24% <ø> (?)
unit-tests	80.09% <ø> (+11.13%)	⬆️

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[eivindjahren]

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