feat(trigger): enhance trigger management with new error handling and response structure

- Added `TriggerInvokeError` and `TriggerIgnoreEventError` for better error categorization during trigger invocation.
- Updated `TriggerInvokeResponse` to include a `cancelled` field, indicating if a trigger was ignored.
- Enhanced `TriggerManager` to handle specific errors and return appropriate responses.
- Refactored `dispatch_triggered_workflows` to improve workflow execution logic and error handling.

These changes improve the robustness and clarity of the trigger management system.

api/core/trigger/errors.py

@@ -1,2 +1,8 @@
 class TriggerProviderCredentialValidationError(ValueError):
     pass
+
+class TriggerInvokeError(Exception):
+    pass
+
+class TriggerIgnoreEventError(TriggerInvokeError):
+    pass