Fix PyTest fixtures and updated mainloop to properly compile

[Rodot-]

added in a special fixture for the montecarlo_1e5 model tests as to a void mixing config fixtures. Set the montecarlo_main_loop to recompile itself on the first iteration ot set proper config options

Test for numba 1e5 model was failing when run on it's own but not when run as part of the test suite. This was caused by the single packet seed setting incorrectly setting every packet to the same seed, which was removed. This indicated a larger problem where the montecarlo main loop was not properly being updated with the config changes after subsequent runs, so a change was added to recompile the main loop on the first iteration of each tardis run.

Motivation and context
Tests failing inconsistently

How has this been tested?

• Testing pipeline.
• Other.

Type of change

• Bug fix.
• New feature.
• Breaking change.
• None of the above.

Checklist

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • (optional) I have built the documentation on my fork following the instructions.
• I have assigned and requested two reviewers for this pull request.

[tardis-bot]

Before a pull request is accepted, it must meet the following criteria:

• Is the necessary information provided?
• Is this a duplicate PR?
  • If a new PR is clearly a duplicate, ask how this PR is different from the original PR?
  • If this PR is about to be merged, close the original PR with a link to this new PR that solved the issue.
• Does it pass existing tests and are new tests provided if required?
  • The test coverage should not decrease, and for new features should be close to 100%.
• Is the code tidy?
  • No unnecessary print lines or code comments.

[epassaro]

/azp run update-refdata

[Rodot-]

/azp refdata-compare

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Azure Pipelines successfully started running 1 pipeline(s).

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[Rodot-]

/azp run compare-refdata

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[azure-pipelines]

Build succeeded 0432498

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[Rodot-]

/azp run compare-refdata

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[codecov]

Codecov Report

Merging #1901 (3e38d38) into master (69b433c) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1901   +/-   ##
=======================================
  Coverage   61.17%   61.18%           
=======================================
  Files          69       69           
  Lines        7331     7332    +1     
=======================================
+ Hits         4485     4486    +1     
  Misses       2846     2846           

Impacted Files	Coverage Δ
tardis/tardis/montecarlo/montecarlo_numba/base.py	32.74% <0.00%> (+0.60%)	⬆️

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[azure-pipelines]

Build succeeded f954904

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