TrigByteStreamTools: optimize trigbs_dumpHLTContentInBS_run3

Further optimization of trigbs_dumpHLTContentInBS_run3.py, i.e. the size_summary method (follow-up to !37507 (merged)):

• The main improvement comes from not converting rod_data() to a tuple. The return type of rod_data() is a u32slice and hence indexing (or getting its length) is fast.
• Use the new StringSerializer::deserialize method to avoid constructing std::vector via ROOT.
• Remove the lru_cache again as that does not seem to have a measurable impact anymore. Likely the cost of converting lists to tuples is offset by the gains of the caching.

This improves the runtime on the 1000 events from test_trig_data_v1Dev_writeBS_grid.py from 7.5 to 2.5 minutes.

Relates to ATR-24508.

HLT/Trigger/TrigTransforms/TrigTransform/python/dbgEventInfo.py

 #!/usr/bin/env python
 
-# Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
 
 # @brief: This is the dbgEventInfo class for the Debug Stream event analysis
 
@@ -117,8 +117,7 @@ class dbgEventInfo:
             for rob in event.children():
                 if rob.source_id().subdetector_id() != eformat.helper.SubDetector.TDAQ_HLT:
                     continue
-                raw_data = tuple(rob.rod_data())
-                collections = get_collections(raw_data, skip_payload=False)
+                collections = get_collections(rob, skip_payload=False)
                 configList = [c for c in collections if 'xAOD::TrigConfKeys_v' in c.name_persistent]
 
                 for conf in configList: