fix: destroyOnReturn backward compatibility for node

Although `destroyOnReturn` was added only in versions >= 16,
the option cannot be set on earlier versions. This sets up
a conditional to send options to the `iterator` only if it
exists.

Semver: patch

lib/tail-file.js

@@ -136,7 +136,13 @@ class TailFile extends Readable {
   }
 
   async _readChunks(stream) {
-    for await (const chunk of stream.iterator({destroyOnReturn: false})) {
+    // For node 16 and higher: https://nodejs.org/docs/latest-v16.x/api/stream.html#readableiteratoroptions
+    /* istanbul ignore next */
+    const iterator = stream.iterator
+      ? stream.iterator({destroyOnReturn: false})
+      : stream
+
+    for await (const chunk of iterator) {
       this[kStartPos] += chunk.length
       if (!this.push(chunk)) {
         this[kStream] = stream