Only run heavy workflows on PR review_requestsd #161

Job	Run time
PE 2019.8.12 standard-with-dr on rhel-8 with fips enable	53m 3s
PE 2021.7.5 standard-with-dr on rhel-8 with fips enable	56m 14s
PE 2023.5.0 standard-with-dr on rhel-8 with fips enable	1h 0m 56s
PE 2019.8.12 large on rhel-8 with fips enable	35m 59s
PE 2021.7.5 large on rhel-8 with fips enable	38m 44s
PE 2023.5.0 large on rhel-8 with fips enable	32m 10s
PE 2019.8.12 extra-large-with-dr on rhel-8 with fips enable	1h 12m 52s
PE 2021.7.5 extra-large-with-dr on rhel-8 with fips enable	1h 16m 59s
PE 2023.5.0 extra-large-with-dr on rhel-8 with fips enable	1h 25m 2s
	8h 31m 59s

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