Add workaround for broken SVGs in nbconvert

[desilinguist]

Newer versions of nbconvert use a "clean_html" filter on SVG elements that break SVG rendering; so we override that filter here with a custom function that is essentially a noop. For more details, please refer to #571.

To review this properly, please run the following on both your Macs and on a Linux server (EC2 instance will work too):

• Clone RSMTool and switch to this branch
• If you are running on your Mac, run CONDA_SUBDIR=osx-64 mamba create -n rsmdev --file requirements.txt python=3.8 to create the conda environment. If on a Linux server, run mamba create -n rsmdev --file requirements.txt python=3.8 instead.
• Activate the newly created environment and run pip install -e .
• Run rsmtool tests/data/experiments/lr-subgroups-with-h2/lr_subgroups_with_h2.json foobar.
• Run open foobar/report/lr_subgroups_with_h2_report.html and make sure that all the figures in the report are visible and as expected.

[codecov]

Codecov Report

Base: 95.74% // Head: 95.75% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (199fdd8) compared to base (7ea1082).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #575   +/-   ##
=======================================
  Coverage   95.74%   95.75%           
=======================================
  Files          29       29           
  Lines        3996     4000    +4     
=======================================
+ Hits         3826     3830    +4     
  Misses        170      170           

Impacted Files	Coverage Δ
rsmtool/reporter.py	92.64% <100.00%> (+0.14%)	⬆️

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[Frost45]

Tested on my Mac and everything works as expected!

[tamarl08]

@desilinguist I tested on linux. some plots are not shown in the report, only black boxes. otherwise it's ok.
(after the test completed I copied the foobar folder to my mac and opened the report)

[desilinguist]

@tamarl08 you saw block boxes on this branch? That's what this PR is supposed to fix so something didn't work right for you. I had also tested on Linux and didn't see any black boxes. Are you sure you tested this branch and not develop?

[tamarl08]

Of course I tested main 😬

[tamarl08]

looks good on the branch!

[damien2012eng]

Tested on EC2. Works as expected!