Add a workflow test with ITS and MFT staggering enabled

This commit adds a CI workflow test that creates and runs a pp workflow with
ALIEN_JDL_ITS_STAGGERED=1 and ALIEN_JDL_MFT_STAGGERED=1.

- wf_test_pp.sh does not set the variables, so the staggering code paths
  of this PR were not exercised by CI.
- The test is picked up automatically from MC/bin/tests.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

Author: sawenzel

MC/bin/tests/wf_test_pp_staggered.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+#
+# A pp workflow MC->RECO->AOD with ITS and MFT staggering enabled
+#
+
+# make sure O2DPG + O2 is loaded
+[ ! "${O2DPG_ROOT}" ] && echo "Error: This needs O2DPG loaded" && exit 1
+[ ! "${O2_ROOT}" ] && echo "Error: This needs O2 loaded" && exit 1
+
+
+# ----------- START ACTUAL JOB  -----------------------------
+
+NSIGEVENTS=${NSIGEVENTS:-5}
+SIGPROC=${SIGPROC:-cdiff}
+NTIMEFRAMES=${NTIMEFRAMES:-2}
+SIMENGINE=${SIMENGINE:-TGeant3}
+NWORKERS=${NWORKERS:-1}
+SEED=${SEED:-624}
+INTERACTIONRATE=${INTERACTIONRATE:-50000}
+
+# enable ITS and MFT staggering in all consumers
+export ALIEN_JDL_ITS_STAGGERED=1
+export ALIEN_JDL_MFT_STAGGERED=1
+
+# create workflow
+${O2DPG_ROOT}/MC/bin/o2dpg_sim_workflow.py -eCM 5020 -col pp -gen pythia8 -proc ${SIGPROC} -ns ${NSIGEVENTS} \
+                                           -tf ${NTIMEFRAMES} -e ${SIMENGINE} -j ${NWORKERS} -seed ${SEED} \
+                                           --include-analysis -run 310000 -interactionRate ${INTERACTIONRATE} \
+                                           --include-local-qc