Add 'hash_pathing_fallback' option, remove File.get_path() method #3340

Job	Run time
Build frontend e2e test image	47s
Build frontend unit test image	46s
lint_core	19s
Build backend e2e test image	45s
Lint mwdb-core web sources	45s
Build mwdb-core core image	1m 2s
Build mwdb-core web image	25s
Perform frontend unit tests	38s
Perform frontend e2e tests	1m 49s
Perform backend e2e tests	2m 54s
Push images on Docker Hub	0s
Push test images on Docker Hub	0s
	10m 10s

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