PG16: Prohibit use of multi-node #19764

Job	Run time
matrixbuilder	5s
PG13.12 Debug ubuntu-22.04	16m 27s
PG14.9 Debug ubuntu-22.04	17m 22s
PG15.4 Debug ubuntu-22.04	17m 4s
PG15.4 Release macos-11	13m 32s
PG15.4 ReleaseWithoutTelemetry ubuntu-22.04	11m 25s
PG13.2 Debug ubuntu-22.04	13m 4s
PG14.0 Debug ubuntu-22.04	12m 4s
PG15.0 Debug ubuntu-22.04	15m 55s
PG15.4 Debug macos-11	16m 44s
PG13.12 Release ubuntu-22.04	9m 3s
PG14.9 Release ubuntu-22.04	11m 55s
PG15.4 Release ubuntu-22.04	10m 14s
PG13.12 ApacheOnly ubuntu-22.04	8m 48s
PG14.9 ApacheOnly ubuntu-22.04	9m 6s
PG15.4 ApacheOnly ubuntu-22.04	10m 9s
PG13snapshot Debug ubuntu-22.04	13m 47s
PG14snapshot Debug ubuntu-22.04	14m 33s
PG15snapshot Debug ubuntu-22.04	20m 22s
	4h 1m 39s

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