[MAINTENANCE] Remove version-specific logic from GXCloudStoreBackend #16650

Job	Run time
static-analysis	2m 59s
ci-is-on-main-repo	1s
unit-tests (ubuntu-latest, 3.8)	2m 26s
unit-tests (ubuntu-latest, 3.9)	2m 22s
ci-does-not-run-on-draft-pull-requests	0s
unit-tests (ubuntu-latest, 3.10)	2m 20s
unit-tests (ubuntu-latest, 3.11)	2m 18s
unit-tests (ubuntu-latest, 3.12)	2m 49s
doc-checks	0s
marker-tests	0s
py38-min-versions	0s
cloud-tests	0s
py310-min-versions	0s
py312-min-versions	0s
py39-min-versions	0s
py311-min-versions	0s
airflow-min-versions	0s
import_gx	0s
pydantic-v1	0s
docs-build	0s
docs-snippets	0s
Build and publish Python distributions to PyPI	0s
notify_on_release	0s
notify_on_failure	0s
	15m 15s

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