Export SVG plots to PNG at higher resolution

[labkey-adam]

Rationale

In short, export SVG -> PNG at a minimum height of 2,000 pixels, regardless of the browser-submitted height.

https://www.labkey.org/home/Developer/issues/issues-details.view?issueId=53390

Also, extract duplicated code from two export actions into a base class

Tasks 📍

• Manual Testing @labkey-tchad
• Needs Automation - Yes @labkey-tchad
  • Test high-res PNG export testAutomation#2784
• Verify Fix @vn929
• Issue
  • https://github.com/LabKey/internal-issues/issues/490

[github-actions]

ERROR: A pull request from 25.11_fb_high_resolution_pngs is expected to target release25.11-SNAPSHOT, not develop

[labkey-tchad]

Working as specified. That being said, 2000px is quite large and I might assume something is going wrong if I didn't know better.
Maybe we could update the tooltip on the export button to explicitly say "Export to Hi-res PNG"?

[labkey-adam]

Working as specified. That being said, 2000px is quite large and I might assume something is going wrong if I didn't know better. Maybe we could update the tooltip on the export button to explicitly say "Export to Hi-res PNG"?

I'm okay with that, but I'm inclined to open a separate issue for this to get some triage eyes on the change and also recognizing that this expands beyond generic & time charts to QC plots, svgChart.js, etc.