JSPWIKI-1189 fixes the described issue with unsaved page edits #403
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i.e. it removes the previous modal configuration (pink overlay setup) with a newer html5 based dialog.
i've checked the code and it looks like the only other thing that calls this javascript api is related to jsonrpc. I'm not sure if that's still used or not.
Submitting for feedback
Example presentation is below

and in dark mode
