Separate out rai_core_flask CI and add paths filter

[romanlutz]

Description

With this change the rai_core_flask CI will only run if we make changes to that folder which is very rare. This should reduce the ridiculous amount of requeuing pipelines significantly.

Checklist

• I have added screenshots above for all UI changes.
• I have added e2e tests for all UI changes.
• Documentation was updated if it was needed.

[gaugup]

Can we remove the setting of fail_fast flag as well? I don't think we should run tests that will fail anyways.

[codecov-commenter]

Codecov Report

Merging #1884 (4a63f93) into main (f2cdec6) will decrease coverage by 3.22%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1884      +/-   ##
==========================================
- Coverage   93.33%   90.10%   -3.23%     
==========================================
  Files          93      112      +19     
  Lines        4559     5883    +1324     
==========================================
+ Hits         4255     5301    +1046     
- Misses        304      582     +278     

Flag	Coverage Δ
unittests	90.10% <ø> (-3.23%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
raiwidgets/raiwidgets/model_analysis_dashboard.py	100.00% <0.00%> (ø)
...iwidgets/raiwidgets/fairness_metric_calculation.py	73.25% <0.00%> (ø)
...dgets/raiwidgets/error_analysis_dashboard_input.py	66.09% <0.00%> (ø)
raiwidgets/raiwidgets/__version__.py	100.00% <0.00%> (ø)
...iwidgets/raiwidgets/model_performance_dashboard.py	50.00% <0.00%> (ø)
raiwidgets/raiwidgets/interfaces.py	100.00% <0.00%> (ø)
raiwidgets/raiwidgets/fairness_dashboard.py	19.56% <0.00%> (ø)
...idgets/raiwidgets/responsibleai_dashboard_input.py	91.50% <0.00%> (ø)
raiwidgets/raiwidgets/cohort.py	95.00% <0.00%> (ø)
...iwidgets/raiwidgets/explanation_dashboard_input.py	59.85% <0.00%> (ø)
... and 9 more

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[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/romanlutz/restrict_flask_to_path/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/romanlutz/restrict_flask_to_path/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/romanlutz/restrict_flask_to_path/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/romanlutz/restrict_flask_to_path/dashboard/index.html

[romanlutz]

This only touches the CI python pipelines which are passing. Everything else looks to be passing, too, but I'd have to rerun them now again since another PR got merged. Since I've spent way too much time on rerunning builds today (and waiting for this to merge so that at least the other 5 PRs can run their builds somewhat faster) I'll make an exception and merge this by bypassing branch protections.