Add MetadataSegmentManager.markSegmentsAsUnused(Iterable<String>) for batch marking segments as unused

There are two places in code where segments are marked unused one by one in a loop:

https://github.com/apache/incubator-druid/blob/c612ddc0f4a4588e97e94173638f8cda286f7c0c/server/src/main/java/org/apache/druid/server/coordinator/helper/DruidCoordinatorCleanupOvershadowed.java#L73-L80

https://github.com/apache/incubator-druid/blob/c612ddc0f4a4588e97e94173638f8cda286f7c0c/extensions-contrib/materialized-view-maintenance/src/main/java/org/apache/druid/indexing/materializedview/MaterializedViewSupervisor.java#L390-L395

Related to #7568.

Start by inspecting the two cited loops in DruidCoordinatorCleanupOvershadowed.java and MaterializedViewSupervisor.java, then locate MetadataSegmentManager and review related issue #7568. Add the requested batch-marking entry point and update the two callers to use it; done means both existing one-by-one loops use the new operation and relevant tests pass.

Written by the indexing model from the issue text.