[Enhancement] Display cluster-level information in the ReactFlow workspace

[ohltyler]

The current view of ingest and search pipelines in the ReactFlow workspace is ambiguous on where/when these resources are created. A few ways this can be improved.

1. (first goal) Where the resources are created. We should display the cluster (local or remote) within the workspace in a visual way. Perhaps a larger parent node encapsulating both the ingest and search flows (see example below). At the least, have more helpful text indicating that these pipelines are being built within the specified cluster.

2. (stretch goal): When the resources are created. Users will iteratively build out these pipelines, and we should reflect what is created only after the users create them, not just based on the UI configuration. This could mean showing the pipelines as greyed-out/disabled, or not shown at all, until they are concretely provisioned.

Example: