fix: add collection usage_key to index #609

Job	Run time
collect-and-verify	4m 58s
lms-1(py=3.11,dj=pinned,mongo=7.0)	9m 59s
lms-2(py=3.11,dj=pinned,mongo=7.0)	11m 5s
lms-3(py=3.11,dj=pinned,mongo=7.0)	9m 50s
lms-4(py=3.11,dj=pinned,mongo=7.0)	8m 57s
lms-5(py=3.11,dj=pinned,mongo=7.0)	8m 48s
lms-6(py=3.11,dj=pinned,mongo=7.0)	8m 48s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	8m 4s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	7m 28s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 13s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 52s
cms-1(py=3.11,dj=pinned,mongo=7.0)	6m 47s
cms-2(py=3.11,dj=pinned,mongo=7.0)	14m 6s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	9m 42s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 5s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	6m 45s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 12s
Unit tests successful	2s
compile-warnings-report	0s
coverage	0s
merge-artifacts	0s
	2h 23m 41s

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