feat(product-assistant): interruption flag for human-in-the-loop

[skoob13]

Problem

We need a generalized approach with a human in the loop. For the initial implementation, I decided to change state values, but this approach doesn't work if there are interruptions in more than one node. Let's use a flag to mark that the graph has been interrupted so nodes will handle the new state on their own.

Changes

• Add the flag resumed marking that the node has been resumed after a human in the loop.

Does this work well for both Cloud and self-hosted?

No

How did you test this code?

Unit tests.

[Twixes]

Yup, generally looks like we should be storing more on the nodes. E.g. query results are currently retrieved in the summarizer and not stored in nodes, but now planning to store on nodes so that we can reference data from a couple messages back