expose StoredWorkflowId in invocation API

lib/galaxy/model/__init__.py

@@ -5514,6 +5514,7 @@ class WorkflowInvocation(UsesCreateAndUpdateTime, Dictifiable, RepresentById):
 
     def to_dict(self, view='collection', value_mapper=None, step_details=False, legacy_job_state=False):
         rval = super().to_dict(view=view, value_mapper=value_mapper)
+        rval['stored_workflow_id'] = self.workflow.stored_workflow.id
         if view == 'element':
             steps = []
             for step in self.steps:

lib/galaxy/webapps/galaxy/api/workflows.py

@@ -835,7 +835,7 @@ class WorkflowsAPIController(BaseAPIController, UsesStoredWorkflowMixin, UsesAnn
             :func:`galaxy.webapps.galaxy.api.workflows.WorkflowsAPIController.create` above.
         """
         # Get workflow + accessibility check.
-        stored_workflow = self.__get_stored_accessible_workflow(trans, workflow_id)
+        stored_workflow = self.__get_stored_accessible_workflow(trans, workflow_id, instance=kwd.get('instance', False))
         workflow = stored_workflow.latest_workflow
         run_configs = build_workflow_run_configs(trans, workflow, payload)
         is_batch = payload.get('batch')
@@ -880,6 +880,10 @@ class WorkflowsAPIController(BaseAPIController, UsesStoredWorkflowMixin, UsesAnn
         :param  workflow_id:      an encoded stored workflow id to restrict query to
         :type   workflow_id:      str
 
+        :param  instance:         true if fetch by Workflow ID instead of StoredWorkflow id, false
+                                  by default.
+        :type   instance:         boolean
+
         :param  history_id:       an encoded history id to restrict query to
         :type   history_id:       str
 
@@ -895,7 +899,7 @@ class WorkflowsAPIController(BaseAPIController, UsesStoredWorkflowMixin, UsesAnn
         :raises: exceptions.MessageException, exceptions.ObjectNotFound
         """
         if workflow_id is not None:
-            stored_workflow_id = self.__get_stored_workflow(trans, workflow_id).id
+            stored_workflow_id = self.__get_stored_workflow(trans, workflow_id, instance=kwd.get('instance', False)).id
         else:
             stored_workflow_id = None