feat(trigger): enhance trigger debugging with polling API and new subscription retrieval

- Refactored DraftWorkflowTriggerNodeApi and DraftWorkflowTriggerRunApi to implement polling for trigger events instead of listening, improving responsiveness and reliability.
- Introduced TriggerSubscriptionBuilderGetApi to retrieve subscription instances for trigger providers, enhancing the API's capabilities.
- Removed deprecated trigger event classes and streamlined event handling in TriggerDebugService, ensuring a cleaner architecture.
- Updated Queue and Stream entities to reflect the changes in trigger event handling, improving overall clarity and maintainability.

These enhancements significantly improve the trigger debugging experience and API usability.

api/core/trigger/entities/entities.py

@@ -269,15 +269,6 @@ class TriggerInputs(BaseModel):
     trigger_name: str
     subscription_id: str
 
-    @classmethod
-    def from_trigger_data(cls, trigger_data: TriggerEventData) -> "TriggerInputs":
-        """Create from debug event data."""
-        return cls(
-            request_id=trigger_data.request_id,
-            trigger_name=trigger_data.triggers[0] if trigger_data.triggers else "",
-            subscription_id=trigger_data.subscription_id,
-        )
-
     @classmethod
     def from_trigger_entity(cls, request_id: str, subscription_id: str, trigger: TriggerEntity) -> "TriggerInputs":
         """Create from trigger entity (for production)."""