build

[FSSDK-12094] Fix Python holdout implementation which related to FSC failures #497

Job	Run time
linting	14s
lint_markdown_files	52s
type-check (3.10)	20s
type-check (3.12)	16s
test (3.9)	41s
test (3.11)	39s
type-check (pypy-3.10)	26s
test (3.12)	47s
type-check (3.9)	16s
test (pypy-3.9)	1m 57s
test (pypy-3.10)	1m 40s
test (3.10)	43s
type-check (3.11)	17s
type-check (pypy-3.9)	20s
fullstack_production_suite / test	8s
integration_tests / test	5s
	9m 41s

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