chore: Converts builtin block Sass variables into CSS variables #28101

Job	Run time
lms-1(py=3.11,dj=pinned,mongo=7.0)	10m 13s
lms-2(py=3.11,dj=pinned,mongo=7.0)	12m 21s
lms-3(py=3.11,dj=pinned,mongo=7.0)	14m 57s
lms-4(py=3.11,dj=pinned,mongo=7.0)	19m 52s
collect-and-verify	4m 51s
lms-5(py=3.11,dj=pinned,mongo=7.0)	11m 8s
lms-6(py=3.11,dj=pinned,mongo=7.0)	16m 23s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	11m 0s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	15m 0s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 55s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 49s
cms-1(py=3.11,dj=pinned,mongo=7.0)	5m 19s
cms-2(py=3.11,dj=pinned,mongo=7.0)	12m 50s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	10m 0s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	5m 35s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	8m 59s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 54s
Unit tests successful	3s
coverage (3.11)	1m 32s
compile-warnings-report	11s
merge-artifacts	7s
	3h 3m 59s

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