[Backport 8.9] Upgrade transport: skip adding new nodes that aren't ready yet (#1995) (#2005)

Author: JoshMock

package.json

@@ -86,7 +86,7 @@
     "zx": "^7.2.2"
   },
   "dependencies": {
-    "@elastic/transport": "^8.3.3",
+    "@elastic/transport": "^8.3.4",
     "tslib": "^2.4.0"
   },
   "tap": {