test: [AXM-636] Cover Offline Mode API with unit tests #783

Job	Run time
collect-and-verify	5m 3s
lms-1(py=3.11,dj=pinned,mongo=7.0)	3m 44s
lms-2(py=3.11,dj=pinned,mongo=7.0)	3m 41s
lms-3(py=3.11,dj=pinned,mongo=7.0)	2m 36s
lms-4(py=3.11,dj=pinned,mongo=7.0)	2m 33s
lms-5(py=3.11,dj=pinned,mongo=7.0)	15s
lms-6(py=3.11,dj=pinned,mongo=7.0)	1s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	1s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	1s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	1s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	1s
cms-1(py=3.11,dj=pinned,mongo=7.0)	5m 8s
cms-2(py=3.11,dj=pinned,mongo=7.0)	5m 6s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	5m 2s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	5m 6s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	1s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	1s
Unit tests successful	1s
coverage	1s
compile-warnings-report	1s
	38m 24s

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