Database "core" not found on UserProfileProvider

[dsimoes]

Describe the bug
The UserProfileProvider code relies on opening the UserProfile Template, which is created on the "core" database.
Sitecore, from version 9.1 has disabled access from CD servers to core database:
see https://doc.sitecore.com/developers/91/platform-administration-and-architecture/en/content-delivery--cd-.html

An exception is thrown opening the user edit profile page:

 ---> System.Web.HttpUnhandledException: An unhandled exception occurred. ---> System.InvalidOperationException: Could not find configuration node: databases/database[@id='core']

at Sitecore.Configuration.DefaultFactory.GetConfigNode(String xpath, Boolean assert)
at Sitecore.Configuration.DefaultFactory.CreateObject(String configPath, String[] parameters, Boolean assert)
at Sitecore.Configuration.DefaultFactory.GetDatabase(String name, Boolean assert)
at Sitecore.Configuration.DefaultFactory.GetDatabase(String name)
at xxxFeature.Accounts.Services.UserProfileProvider.GetProfileTemplate(String profileItemId)
at xxx.Feature.Accounts.Services.UserProfileProvider.GetCustomProperties(UserProfile userProfile)
at xxx.Feature.Accounts.Services.UserProfileService.GetProfile(User user)

Sitecore Version
9.1.1

To Reproduce
Open / try to update user profile
Expected behavior
No errors