fix: Dynamic port for LEARNING MFE in form of ENV variable #873

Job	Run time
run_ci (ubuntu-24.04, 3.11, registrar+lms)	16m 56s
run_ci (ubuntu-24.04, 3.11, edx_notes_api+lms)	19m 19s
run_ci (ubuntu-24.04, 3.11, ecommerce+lms)	21m 23s
run_ci (ubuntu-24.04, 3.11, discovery+lms+forum)	23m 58s
run_ci (ubuntu-24.04, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	25m 21s
run_ci (ubuntu-24.04, 3.11, designer+lms)	17m 48s
run_ci (ubuntu-24.04, 3.11, credentials+lms)	18m 52s
run_ci (ubuntu-24.04, 3.11, xqueue)	2m 33s
run_ci (ubuntu-24.04, 3.11, license-manager+lms)	21m 49s
run_ci (ubuntu-24.04, 3.11, analyticsapi+insights+lms)	22m 38s
run_ci (ubuntu-24.04, 3.11, edx-exams+lms)	21m 47s
	3h 32m 24s

Provide feedback