fix: make mfe_config_api tests portable across release branches (#38497) #47584

Job	Run time
collect-and-verify	3m 29s
lms-3(py=3.12,dj=pinned,mongo=7.0)	18m 47s
lms-5(py=3.12,dj=pinned,mongo=7.0)	20m 5s
lms-2(py=3.12,dj=pinned,mongo=7.0)	19m 27s
shared-with-lms-1(py=3.12,dj=pinned,mongo=7.0)	21m 56s
lms-4(py=3.12,dj=pinned,mongo=7.0)	21m 59s
shared-with-cms-1(py=3.12,dj=pinned,mongo=7.0)	23m 13s
shared-with-lms-2(py=3.12,dj=pinned,mongo=7.0)	19m 41s
cms-1(py=3.12,dj=pinned,mongo=7.0)	5m 0s
cms-2(py=3.12,dj=pinned,mongo=7.0)	19m 22s
lms-1(py=3.12,dj=pinned,mongo=7.0)	20m 58s
Unit tests successful	3s
compile-warnings-report	2m 47s
coverage	0s
merge-artifacts	23s
	3h 17m 10s

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