Reproduce:

• Go to a function that have no approved implementation but have unapproved implementation
• The FunctionEvaluator widget shows a message saying that the function cannot be run
• Connect an implementation
• The FunctionEvaluator widget is still not runnable

Expected:

• The state of the FunctionEvaluator updates whenever implementations are connected or disconnected

Examples

Case 1: from not-runnable to runnable

1. No implementations are connected, evaluator is not-runnable:
   
2. We connect them, evaluator is not refreshed:
   

Case 2: from runnable to not-runnable

1. There are connected implementations, function can be run in the evaluator widget:
   
2. We disconnect them, evaluator widget can still be used: