Optimization: Prune manifest in snapshot overwrite operations #7676

Job	Run time
integration-test	15m 36s
lint-and-unit-test (3.13)	2m 51s
integration-test-gcs	1m 11s
lint-and-unit-test (3.12)	2m 54s
integration-test-s3	1m 22s
integration-test-adls	6m 23s
lint-and-unit-test (3.10)	6m 24s
lint-and-unit-test (3.11)	3m 0s
integration-coverage-report	-1s
	39m 40s

Provide feedback