Azure email provider can't handle display names in email addresses

[BenedekFarkas]

Describe the bug

The Azure email provider surfaces an exception from Azure.Communication.Email when it passes in email addresses that include a display name to the constructor of the EmailAddress class in AzureEmailProviderBase.

Orchard Core version

2.0

To Reproduce

1. Configure the application to use Azure Email Communication Services and enable the Orchard.Email.Azure feature.
2. Use the email test settings screen (/Admin/Email/Test) and provide an email address in the Display Name <[email protected]> format in any of the fields that accept an email address.

Expected behavior

The provider should deconstruct such email addresses and use the other overload of the AzureEmailProviderBase constructor which accepts a separate display name parameter too.
Orchard.Email.Smtp handles this correctly, because MimeKit takes care of deconstructing such email addresses.

The display name for the sender field is simply dropped, because the SDK doesn't support it: Azure/azure-sdk-for-net#43847

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