Revert "Move `add_breadcrumb` and session function from Hub to Scope … #4352

Job	Run time
django latest, python 3.10, ubuntu-20.04	1m 46s
django latest, python 3.11, ubuntu-20.04	1m 46s
django latest, python 3.12, ubuntu-20.04	2m 6s
django pinned, python 3.5, ubuntu-20.04	4m 9s
django py27, python 2.7	2m 43s
django pinned, python 3.6, ubuntu-20.04	4m 53s
django pinned, python 3.7, ubuntu-20.04	4m 21s
django pinned, python 3.8, ubuntu-20.04	5m 47s
django pinned, python 3.9, ubuntu-20.04	6m 4s
django pinned, python 3.10, ubuntu-20.04	5m 21s
django pinned, python 3.11, ubuntu-20.04	5m 6s
django pinned, python 3.12, ubuntu-20.04	5m 42s
All django tests passed or skipped	1s
	49m 45s

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