`BaselineOfGToolkit>>#postLoadGToolkit:` should not explicitly reference some inexistent classes
`BaselineOfGToolkit>>#postLoadGToolkit:` should not explicitly reference some inexistent classes

Particularly: 
- `GtNotificationBadgePublisher`, and 
- `GtNotificationIcebergCredentialsProvider beDefaultProvider.`

They are loaded later.

In addition, we do not need `transcriptIcebergProvider:` debug code anymore.
feenkcom/gtoolkit