FIX: S3Inventory to ignore files older than last backup restore date (#27166)

This commit updates `S3Inventory#files` to ignore S3 inventory files
which have a `last_modified` timestamp which are not at least 2 days
older than `BackupMetadata.last_restore_date` timestamp.

This check was previously only in `Jobs::EnsureS3UploadsExistence` but
`S3Inventory` can also be used via Rake tasks so this protection needs
to be in `S3Inventory` and not in the scheduled job.

lib/s3_helper.rb

@@ -27,6 +27,7 @@ class S3Helper
 
   def initialize(s3_bucket_name, tombstone_prefix = "", options = {})
     @s3_client = options.delete(:client)
+    @s3_bucket = options.delete(:bucket)
     @s3_options = default_s3_options.merge(options)
 
     @s3_bucket_name, @s3_bucket_folder_path =