ExB Developer Edition v 1.19 app "portalUrl" now must match case

[coryeicher]

I am migrating Developer Edition apps and custom widgets from 1.17 to 1.19

After copying over contents of `server\public\apps`, the 1.17 apps were not listed under Experiences.

One problem: 1.19 requires "portalUrl" case to match. By changing portalUrl for my apps I can make them appear

// in info.json

// 1.17

  "portalUrl": "https://mycompany.maps.arcgis.com",
  "username": "tacocat",

// 1.19

  "portalUrl": "https://MyCompany.maps.arcgis.com",
  "username": "tacocat",

I was not able to find this documented anywhere.