Widen expression predicate term field type for mypy compatibility #8679

Job	Run time
integration-test	11m 25s
integration-test-s3	1m 20s
integration-test-gcs	1m 5s
integration-test-adls	1m 17s
cibw-dev-env-smoke-test	28s
lint-and-unit-test (3.13)	2m 53s
lint-and-unit-test (3.14)	2m 37s
lint-and-unit-test (3.11)	2m 48s
lint-and-unit-test (3.10)	3m 2s
lint-and-unit-test (3.12)	3m 6s
integration-coverage-report	36s
	30m 37s

Provide feedback