feat: added notification grouping #29649

Job	Run time
collect-and-verify	4m 4s
lms-1(py=3.11,dj=pinned,mongo=7.0)	10m 15s
lms-2(py=3.11,dj=pinned,mongo=7.0)	11m 27s
lms-3(py=3.11,dj=pinned,mongo=7.0)	15m 9s
lms-4(py=3.11,dj=pinned,mongo=7.0)	19m 39s
lms-5(py=3.11,dj=pinned,mongo=7.0)	10m 55s
lms-6(py=3.11,dj=pinned,mongo=7.0)	15m 26s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	11m 11s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	14m 47s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 19s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 31s
cms-1(py=3.11,dj=pinned,mongo=7.0)	4m 44s
cms-2(py=3.11,dj=pinned,mongo=7.0)	12m 53s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	9m 44s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	5m 42s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	9m 2s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 39s
Unit tests successful	4s
compile-warnings-report	10s
coverage (3.11)	1m 39s
merge-artifacts	7s
	3h 0m 27s

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