[master] Minor fixes

BEGINRELEASENOTES

• dirac-loop

CHANGE: add a --Last and --ShowLast option to reuse the previous set of items or show them

FIX: decode the subprocess output

• storage-summary

FIX: set the default top directory as it seems it doesn't work if not specified now

• TransformationDebug

FIX: avoid exception when sorting taskIDs and one is None

• StorageUsageAgent

FIX: fix exception due to dictionary iteration while removing items

ENDRELEASENOTES

Closes #211123