Encode dir obj names before expiration (#19305)

Object names of directory objects qualified for ExpiredObjectAllVersions
must be encoded appropriately before calling on deletePrefix on their
erasure set.

e.g., a directory object and regular objects with overlapping prefixes
could lead to the expiration of regular objects, which is not the 
intention of ILM. 

```
bucket/dir/ ---> directory object
bucket/dir/obj-1
```

When `bucket/dir/` qualifies for expiration, the current implementation would
remove regular objects under the prefix `bucket/dir/`, in this case,
`bucket/dir/obj-1`.

internal/event/name.go

@@ -47,6 +47,7 @@ const (
 	ObjectCreatedDeleteTagging
 	ObjectRemovedDelete
 	ObjectRemovedDeleteMarkerCreated
+	ObjectRemovedDeleteAllVersions
 	ObjectRemovedNoOP
 	BucketCreated
 	BucketRemoved
@@ -100,6 +101,7 @@ func (name Name) Expand() []Name {
 			ObjectRemovedDelete,
 			ObjectRemovedDeleteMarkerCreated,
 			ObjectRemovedNoOP,
+			ObjectRemovedDeleteAllVersions,
 		}
 	case ObjectReplicationAll:
 		return []Name{
@@ -193,6 +195,8 @@ func (name Name) String() string {
 		return "s3:ObjectRemoved:DeleteMarkerCreated"
 	case ObjectRemovedNoOP:
 		return "s3:ObjectRemoved:NoOP"
+	case ObjectRemovedDeleteAllVersions:
+		return "s3:ObjectRemoved:DeleteAllVersions"
 	case ObjectReplicationAll:
 		return "s3:Replication:*"
 	case ObjectReplicationFailed:
@@ -313,6 +317,8 @@ func ParseName(s string) (Name, error) {
 		return ObjectRemovedDeleteMarkerCreated, nil
 	case "s3:ObjectRemoved:NoOP":
 		return ObjectRemovedNoOP, nil
+	case "s3:ObjectRemoved:DeleteAllVersions":
+		return ObjectRemovedDeleteAllVersions, nil
 	case "s3:Replication:*":
 		return ObjectReplicationAll, nil
 	case "s3:Replication:OperationFailedReplication":

internal/event/name_test.go

@@ -36,7 +36,7 @@ func TestNameExpand(t *testing.T) {
 			ObjectCreatedCompleteMultipartUpload, ObjectCreatedCopy, ObjectCreatedPost, ObjectCreatedPut,
 			ObjectCreatedPutRetention, ObjectCreatedPutLegalHold, ObjectCreatedPutTagging, ObjectCreatedDeleteTagging,
 		}},
-		{ObjectRemovedAll, []Name{ObjectRemovedDelete, ObjectRemovedDeleteMarkerCreated, ObjectRemovedNoOP}},
+		{ObjectRemovedAll, []Name{ObjectRemovedDelete, ObjectRemovedDeleteMarkerCreated, ObjectRemovedNoOP, ObjectRemovedDeleteAllVersions}},
 		{ObjectAccessedHead, []Name{ObjectAccessedHead}},
 	}