[Bug]: Throwing an ERS exception type and not catching it results in no message printed

Description

Did not see full message output from throw when not caught. Had to add a ers::error to see the message.

Steps to reproduce

While developing a DAQModule, I forgot the DEFINE_DUNE_DAQ_MODULE call in the cpp file. The unit test calls appfwk::make_module without a try..catch block. When I run the test, I see this:

2026-Jun-26 13:19:00,732 LOG [dunedaq::DataflowStatusModule_test::Constructor::test_method(...) at /home/eflumerf/Desktop/dune-daq-base/dev-dfoprotocol-260624/sourcecode/dfmodules/unittest/DataflowStatusModule_test.cxx:151] Test case Constructor BEGIN
unknown location(0): fatal error: in "DataflowStatusModule_test/Constructor": dunedaq::appfwk::DAQModuleCreationFailed: Failed to create DAQModule test of type DataflowStatusModule

If I add an ers::error before the throw, I see much more information:

2026-Jun-26 13:24:29,932 LOG [dunedaq::DataflowStatusModule_test::Constructor::test_method(...) at /home/eflumerf/Desktop/dune-daq-base/dev-dfoprotocol-260624/sourcecode/dfmodules/unittest/DataflowStatusModule_test.cxx:151] Test case Constructor BEGIN
2026-Jun-26 13:24:29,978 ERROR [dunedaq::appfwk::make_module(...) at /home/eflumerf/Desktop/dune-daq-base/dev-dfoprotocol-260624/sourcecode/appfwk/include/appfwk/detail/DAQModule.hxx:48] Failed to create DAQModule test of type DataflowStatusModule
        was caused by: 2026-Jun-26 13:24:29,978 ERROR [ers::Issue::Issue(...) at /tmp/root/spack-stage/spack-stage-ers-NB_DEV_260624_A9-67mi2pnty2odfjiryrqn5qf5z7xziq3p/spack-src/src/Issue.cpp:102] ---- Configuration BEGIN
  UnknownPlugin
  ---- Configuration BEGIN
    Unable to load requested symbol make from library /home/eflumerf/Desktop/dune-daq-base/dev-dfoprotocol-260624/install/dfmodules/lib64/libdfmodules_DataflowStatusModule_duneDAQModule.so
    /home/eflumerf/Desktop/dune-daq-base/dev-dfoprotocol-260624/install/dfmodules/lib64/libdfmodules_DataflowStatusModule_duneDAQModule.so: undefined symbol: make
  ---- Configuration END
  Plugin DataflowStatusModule with version Unknown was not registered.
  Perhaps your plugin type is misspelled or is not a plugin recognized by this
  system.
---- Configuration END

unknown location(0): fatal error: in "DataflowStatusModule_test/Constructor": dunedaq::appfwk::DAQModuleCreationFailed: Failed to create DAQModule test of type DataflowStatusModule

Version and environment

NFD_DEV_260626_A9

Impact

Small/Isolated

Anything else?

No response

Start at appfwk/detail/DAQModule.hxx:48, where make_module reports the DAQModuleCreationFailed exception, and reproduce the failure from DataflowStatusModule_test.cxx:151 without a try/catch block. Compare the uncaught output with the ers::error output; done means the uncaught exception preserves the detailed underlying error message.