Connectors should use the StreamName namespace & name fields

[ChristopheDuong]

Tell us about the problem you're trying to solve

Following-up on #2228, sources and destinations should use the new namespace and stream name from the AirbyteStreamName object to determine the source/final destination location of data that is being replicated.

This StreamName would potentially be altered by #2239 in the middle while being in transit from the source to the destination

Describe the solution you’d like

Instead of using AirbyteStream.getName(), destination connectors should rely on AirbyteStream.getStreamName().getNamespace() and AirbyteStream.getStreamName().getName()

(we should remove usage of methods based on AirbyteStream.name

Additional context

This should be the final step to implement #1921 (before implementing the UI part to override final destinations)

[davinchia]

Closing as we've chosen a different approach to doing this.