fix(ResourceExplorer2): set dualstack endpoint by default (#4263)

Author: trivikr

.changes/next-release/bugfix-ResourceExplorer2-176b5724.json

@@ -0,0 +1,5 @@
+{
+  "type": "bugfix",
+  "category": "ResourceExplorer2",
+  "description": "Set endpoint to dualstack by default"
+}

lib/region_config_data.json

@@ -67,7 +67,8 @@
     "*/sdb": {
       "endpoint": "{service}.{region}.amazonaws.com",
       "signatureVersion": "v2"
-    }
+    },
+    "*/resource-explorer-2": "dualstackByDefault"
   },
 
   "fipsRules": {
@@ -223,6 +224,9 @@
     },
     "dualstackLegacyEc2": {
       "endpoint": "api.ec2.{region}.aws"
+    },
+    "dualstackByDefault": {
+      "endpoint": "{service}.{region}.api.aws"
     }
   }
 }