fix: fixed notification generated event for grouped notifications #32699

Job	Run time
collect-and-verify	4m 0s
lms-1(py=3.11,dj=pinned,mongo=7.0)	10m 4s
lms-2(py=3.11,dj=pinned,mongo=7.0)	11m 22s
lms-3(py=3.11,dj=pinned,mongo=7.0)	15m 15s
lms-4(py=3.11,dj=pinned,mongo=7.0)	20m 4s
lms-5(py=3.11,dj=pinned,mongo=7.0)	11m 16s
lms-6(py=3.11,dj=pinned,mongo=7.0)	15m 32s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	10m 36s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	14m 22s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 49s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 24s
cms-1(py=3.11,dj=pinned,mongo=7.0)	4m 17s
cms-2(py=3.11,dj=pinned,mongo=7.0)	12m 23s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	9m 24s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	5m 22s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	8m 33s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 11s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 47s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	10m 7s
Unit tests successful	2s
coverage (3.11)	1m 45s
compile-warnings-report	8s
merge-artifacts	11s
	3h 16m 54s

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