Merge pull request #18009 from mvdbeek/return_message_exception_when_…

…invocation_report_references_invalid_output

[24.0] Raise ``MessageException`` when report references invalid workflow output

lib/galaxy/model/__init__.py

@@ -8586,11 +8586,11 @@ def get_output_object(self, label):
         # That probably isn't good.
         workflow_output = self.workflow.workflow_output_for(label)
         if workflow_output:
-            raise Exception(
+            raise galaxy.exceptions.MessageException(
                 f"Failed to find workflow output named [{label}], one was defined but none registered during execution."
             )
         else:
-            raise Exception(
+            raise galaxy.exceptions.MessageException(
                 f"Failed to find workflow output named [{label}], workflow doesn't define output by that name - valid names are {self.workflow.workflow_output_labels}."
             )