Configure muon trigger to run on MC

Since for MC we start from RDO input, we don't need to run the BS to RDO decoding to run. Also swtiching off the checking for ID related BS containers if we aren't reading BS input. Fixes the problems reported in ATR-19763. Also add a ART test to run the muon trigger menu on MC.

Trigger/TrigValidation/TrigUpgradeTest/test/test_trigUpgr_slice_mu_mc_build.sh

+#!/bin/bash
+# art-description: athenaMT trigger test on MC running L1 simulation and the muon menu
+# art-type: build
+# art-include: master/Athena
+# art-output: *.log
+# art-output: *.new
+# art-output: *.txt
+# art-output: *.root
+
+export EVENTS=10
+export THREADS=1
+export SLOTS=1
+export INPUT="run2mc_ttbar"
+export JOBOPTION="TrigUpgradeTest/full_menu.py"
+export EXTRA="doL1Sim=True;doEmptyMenu=True;doMuonSlice=True"
+
+# This test doesn't produce any output useful for RegTest, so do a dummy reference comparison
+export REGTESTEXP="leaving with code"
+export REGTESTREF=`find_data.py TrigUpgradeTest/dummy_regtest.ref`
+
+
+
+source exec_TrigUpgradeTest_art_athenaMT.sh
+source exec_TrigUpgradeTest_art_post.sh