fix: Dynamic port for LEARNING MFE in form of ENV variable #874

Job	Run time
run_ci (ubuntu-24.04, 3.11, analyticsapi+insights+lms)	22m 16s
run_ci (ubuntu-24.04, 3.11, license-manager+lms)	18m 47s
run_ci (ubuntu-24.04, 3.11, edx_notes_api+lms)	17m 41s
run_ci (ubuntu-24.04, 3.11, registrar+lms)	19m 18s
run_ci (ubuntu-24.04, 3.11, designer+lms)	19m 44s
run_ci (ubuntu-24.04, 3.11, xqueue)	3m 0s
run_ci (ubuntu-24.04, 3.11, credentials+lms)	21m 39s
run_ci (ubuntu-24.04, 3.11, discovery+lms+forum)	24m 41s
run_ci (ubuntu-24.04, 3.11, ecommerce+lms)	22m 51s
run_ci (ubuntu-24.04, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	25m 19s
run_ci (ubuntu-24.04, 3.11, edx-exams+lms)	18m 11s
	3h 33m 27s

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