Clean up view descriptions for usability and consistency

[shouples]

Current behavior, starting from the Resources view:

• Topics view: shows env name | cluster name when a Kafka cluster is selected
• Schemas view: shows env name | Schema Registry ID when a Schema Registry is selected
• Flink Statements view:
  • shows FCP: pool name | pool ID if a Flink compute pool is selected
  • shows ENV: env name | env id if a CCloud environment is selected as a Flink environment
• Flink Database view: shows env name | cluster/database name when a Kafka cluster is selected as a Flink database

There isn't much value in showing the resource ids here, and due to limited horizontal space, we often lose visibility to the resource names:

We should flip the ordering so the focused resource name is shown on the left, with an optional cloud provider+region next (if it's a CCloud resource), and finally the environment name on the right.