[3.2.1 Backport] CBG-4324: fix for per shard memory based eviction (#… #12496

Job	Run time
lint	1m 44s
build	17s
python-format	4s
addlicense	16s
python-lint	4s
test (macos)	34s
test-default-collection	22s
test-no-xattrs	16s
test (windows)	1m 25s
test-race	15s
test (ubuntu)	21s
test-sgcollect (macos-latest)	1m 9s
test-stats-definition-exporter (macos-latest)	1m 56s
test-stats-definition-exporter (windows-latest)	4m 2s
test-stats-definition-exporter (ubuntu-latest)	1m 31s
test-sgcollect (windows-latest)	3m 51s
test-sgcollect (ubuntu-latest)	22s
	18m 29s

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