Update RunInference type hints to PEP 585 standards

[jrmccluskey]

Updates RunInference model handlers to PEP 585 standards, migrating away from the typing module as appropriate.

Part of #32969

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[shunping]

LGTM. The test failure seems unrelated.

Looks like the type hints in Anomaly Detection needs to be updated to follow PEP 585 as well.

[jrmccluskey]

LGTM. The test failure seems unrelated.

Looks like the type hints in Anomaly Detection needs to be updated to follow PEP 585 as well.

Yeah the failures are the known issue with the gcsio retry test.

Updating hints is usually pretty straightforward, the full migration list is at https://peps.python.org/pep-0585/ but for beam it's usually moving to the built-in types (tuple, list, dict, set, frozenset) and then swapping the abstract containers from typing to the collections.abc equivalents. Under the hood the typing versions are just aliased versions of the collections versions now anyway