refactor: streamline trigger event node metadata handling and update async workflow service for JSON serialization

- Removed unnecessary input data from the TriggerEventNode's metadata.
- Updated AsyncWorkflowService to use model_dump_json() for trigger metadata serialization.
- Added a comment in WorkflowAppService to address the large size of the workflow_app_log table and the use of an additional details field.

api/tasks/trigger_processing_tasks.py

@@ -18,6 +18,7 @@ from core.plugin.entities.plugin_daemon import CredentialType
 from core.plugin.entities.request import TriggerInvokeEventResponse
 from core.trigger.debug.event_bus import TriggerDebugEventBus
 from core.trigger.debug.events import PluginTriggerDebugEvent, build_plugin_pool_key
+from core.trigger.entities.api_entities import TriggerProviderApiEntity
 from core.trigger.provider import PluginTriggerProviderController
 from core.trigger.trigger_manager import TriggerManager
 from core.workflow.enums import NodeType
@@ -31,7 +32,7 @@ from services.async_workflow_service import AsyncWorkflowService
 from services.end_user_service import EndUserService
 from services.trigger.trigger_provider_service import TriggerProviderService
 from services.trigger.trigger_request_service import TriggerHttpRequestCachingService
-from services.workflow.entities import PluginTriggerData, PluginTriggerDispatchData
+from services.workflow.entities import PluginTriggerData, PluginTriggerDispatchData, PluginTriggerMetadata
 
 logger = logging.getLogger(__name__)
 
@@ -138,6 +139,7 @@ def dispatch_triggered_workflow(
     provider_controller: PluginTriggerProviderController = TriggerManager.get_trigger_provider(
         tenant_id=subscription.tenant_id, provider_id=TriggerProviderID(subscription.provider_id)
     )
+    trigger_entity: TriggerProviderApiEntity = provider_controller.to_api_entity()
     with Session(db.engine) as session:
         workflows: Mapping[str, Workflow] = _get_latest_workflows_by_app_ids(session, subscribers)
 
@@ -201,6 +203,14 @@ def dispatch_triggered_workflow(
                 plugin_id=subscription.provider_id,
                 endpoint_id=subscription.endpoint_id,
                 inputs=invoke_response.variables,
+                trigger_metadata=PluginTriggerMetadata(
+                    plugin_id=trigger_entity.plugin_id or "",
+                    plugin_unique_identifier=trigger_entity.plugin_unique_identifier or "",
+                    endpoint_id=subscription.endpoint_id,
+                    provider_id=subscription.provider_id,
+                    icon_url=trigger_entity.icon or "",
+                    icon_dark_url=trigger_entity.icon_dark or "",
+                ),
             )
 
             # Trigger async workflow