Interval loop on long running routers can get stuck

[preethamr]

Problem

Interval loop on long running routers can get stuck.
Noticed in Hashquark router logs, with stuck interval loops that query subgraphs, but sendStatusToSequencer functions as expected, leading us to believe the router is actually working.

Impact

Overall reliability of the network.

Proposed Solution

Acceptance Criteria

From an end user perspective, the below criteria must be met to consider this done:

• Test the stop mechanism against a simulated stuck interval loops
• Router recovers from the stuck loop and resumes iterations

[alexwhte]

@preethamr is this done?