Remove download svg option due to highcharts limitations

[tongyu-microsoft]

This PR removes "Download svg vector image" option from highchart exporting menu list.
The issue is, downloaded svg is corrupt and can't view it.

The root cause is, we adds the highcharts accessibility module to the imported Highcharts namespace by Accessibility.default(Highcharts);. And this module adds a div element to the svg file that we are trying to download (see the red underline in screenshot below). So the svg file fails to be rendered. If we remove Accessibility.default(Highcharts);, then the svg element can be rendered in browser. But we want to enable accessibility for highcharts. So we remove "Download svg vector image" option from highchart exporting menu list.

The default exporting menu list is ["viewFullscreen", "printChart", "separator", "downloadPNG", "downloadJPEG", "downloadPDF", "downloadSVG"], we remove the "downloadSVG", so this PR specify menuItems to be ["viewFullscreen", "printChart", "separator", "downloadPNG", "downloadJPEG", "downloadPDF"].

Description

Before:

After:

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.

[codecov-commenter]

Codecov Report

Merging #1498 (ee46941) into main (2e339ed) will decrease coverage by 2.34%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1498      +/-   ##
==========================================
- Coverage   89.91%   87.57%   -2.35%     
==========================================
  Files          90      110      +20     
  Lines        3848     5093    +1245     
==========================================
+ Hits         3460     4460    +1000     
- Misses        388      633     +245     

Flag	Coverage Δ
unittests	87.57% <ø> (-2.35%)	⬇️

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

Impacted Files	Coverage Δ
raiwidgets/raiwidgets/error_handling.py	100.00% <0.00%> (ø)
raiwidgets/raiwidgets/__init__.py	100.00% <0.00%> (ø)
raiwidgets/raiwidgets/responsibleai_dashboard.py	67.85% <0.00%> (ø)
raiwidgets/raiwidgets/constants.py	99.40% <0.00%> (ø)
raiwidgets/raiwidgets/explanation_dashboard.py	83.33% <0.00%> (ø)
...iwidgets/raiwidgets/explanation_dashboard_input.py	60.13% <0.00%> (ø)
raiwidgets/raiwidgets/cohort.py	95.00% <0.00%> (ø)
raiwidgets/raiwidgets/utils.py	100.00% <0.00%> (ø)
raiwidgets/raiwidgets/fairness_dashboard.py	19.56% <0.00%> (ø)
raiwidgets/raiwidgets/dashboard.py	92.68% <0.00%> (ø)
... and 10 more

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[github-actions]

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

[github-actions]

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

[romanlutz]

This is a great find! Is this a known bug in highcharts? If not, should we file it?

No objection to your change, of course!

[tongyu-microsoft]

This is a great find! Is this a known bug in highcharts? If not, should we file it?

No objection to your change, of course!

@romanlutz Yes! We have filed a bug to highcharts: highcharts/highcharts#17390

[github-actions]

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

[tongyu-microsoft]

A workaround: https://jsfiddle.net/oysteinmoseng/yezu6nx3/
The latest version of Highcharts has the fix for this svg export issue: highcharts/highcharts#16589