[task] Avoid defining incomplete constant output schemas for actions or triggers that don't have a fixed output schema structure.

[ivicac]

• It brings more confusion in the Data Pill panel as not all expected data pills are shown
• Instead, define OutputFunction to evaluate expected schema dynamically
• as a last resort, define a fully dynamic output schema by setting .output() to allow calling the perform method through the "Test Component" button/menu item
• As a rule of thumb:
  • the OutputFunction should be defined when an action/trigger has dynamic output but does not connect to any external service(Var, ObjectHelper components, for example)
  • the fully dynamic output schema by setting .output() should be defined when an action/trigger has dynamic output and consumes external services(HttpClient component, for example)