Fix RUN_GTEST/RUN_GBENCH leak into pax.so build #3559

Job	Run time
check-skip	3s
prepare-test-matrix	3s
Build Apache Cloudberry RPM	13m 58s
RPM Install Test Apache Cloudberry	1m 40s
pax-ic-isolation2-opt-off	23m 30s
pax-ic-good-opt-off	23m 54s
ic-good-opt-on	27m 40s
ic-resgroup-v2	20m 25s
ic-diskquota	11m 3s
pax-ic-good-opt-on	26m 52s
ic-isolation2-hot-standby	5m 34s
ic-good-opt-off	25m 24s
pax-ic-isolation2-opt-on	22m 35s
ic-contrib	4m 40s
ic-expandshrink	4m 49s
ic-fixme	3m 7s
ic-singlenode	7m 50s
ic-parallel-retrieve-cursor	3m 55s
ic-isolation2	35m 49s
ic-gpcontrib	3m 27s
ic-isolation2-crash	5m 8s
ic-cbdb-parallel	29m 0s
Generate Apache Cloudberry Build Report	2s
	5h 0m 28s

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