s3: Delete Bucket should not recreate bucket if it does not exist (#17676)

Also return Bucket Not Found error in the same use case.

cmd/bucket-handlers.go

@@ -1621,10 +1621,14 @@ func (api objectAPIHandlers) DeleteBucketHandler(w http.ResponseWriter, r *http.
 		}
 	}
 
-	deleteBucket := objectAPI.DeleteBucket
+	// Return an error if the bucket does not exist
+	if _, err := objectAPI.GetBucketInfo(ctx, bucket, BucketOptions{}); err != nil && !forceDelete {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
 
 	// Attempt to delete bucket.
-	if err := deleteBucket(ctx, bucket, DeleteBucketOptions{
+	if err := objectAPI.DeleteBucket(ctx, bucket, DeleteBucketOptions{
 		Force:      forceDelete,
 		SRDeleteOp: getSRBucketDeleteOp(globalSiteReplicationSys.isEnabled()),
 	}); err != nil {