Adapt to components becoming `inactive` on the fly

[shsms]

• [client] Provide component data streams only for active components

  When the client receives a streaming request for a component, the client should return an open stream only if the component is active based on the response from list_components.

  If the client loses connection to the microgrid API service and has to reconnect to a component data stream, it should first check that the component is active according to list_components, and if it is not, then the client should drop the sender, so that downstream gets informed about this change.

• [logical meter] When an input stream for a formula exits, rebuild the component graph

  Additionally, regenerate all formulas created from the component graph.