Remove simulated load events

[robbecker-wf]

Remove simulated load events and assume that the browser supports the FontFace API https://caniuse.com/mdn-api_fontface
This drops support for old browsers like IE and Edge 12-18.

Changes:

• Removes all simulated load event code
• No need for the adobe blank font
• No checking for the webkit bug when not doing simulated load events
• Remove tests for simulated events and the ruler class
• Removes simulated sections of the example app

[aviary3-wk]

Security Insights

No security relevant content was detected by automated scans.

Action Items

• Review PR for security impact; comment "security review required" if needed or unsure
• Verify aviary.yaml coverage of security relevant code

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[tomconnell-wf]

I barely remember this repo, but these changes seem reasonable to me.

[robbecker-wf]

github thinks @olesiathoms-wk or @corwinsheahan-wf might make good reviewers

[corwinsheahan-wf]

Strange, I'm pretty sure I don't even have a single commit to this repo 😬

[olesiathoms-wk]

I think I did PR here once during post dart2 cleanup.
Changes lgtm though.

[robbecker-wf]

@pauldanner-wk Would you be able to smoke test in IR viewer to make sure fonts load correctly with this version?

[pauldanner-wk]

Put it on my TODO list first thing in the morning

[pauldanner-wk]

QA +1

• Passing CI here
• Passing CI in w_viewer consumer branch https://github.com/Workiva/w_viewer/pull/789
• Passing CI in graph_app consumer branch of w_viewer and this: https://github.com/Workiva/graph_app/pull/24201
• Ran graph_app locally, and verified code path which makes use of this gets hit (w_viewer > network_document_provider > _loadFont). No differences observed in any text or fonts used in markup viewer

[robbecker-wf]

Woohoo thanks @pauldanner-wk !

[robbecker-wf]

@Workiva/release-management-p

[rmconsole-wf]

+1 from RM