Optimization: Prune manifest in snapshot overwrite operations #7677

Job	Run time
integration-test-s3	1m 22s
lint-and-unit-test (3.11)	2m 44s
lint-and-unit-test (3.12)	2m 47s
integration-test	10m 36s
integration-test-gcs	1m 19s
integration-test-adls	1m 16s
lint-and-unit-test (3.13)	2m 35s
lint-and-unit-test (3.10)	2m 59s
integration-coverage-report	35s
	26m 13s

Provide feedback