fix type of env values

packages/node_modules/@node-red/runtime/lib/nodes/flows/Subflow.js

@@ -240,6 +240,15 @@ class Subflow extends Flow {
             else {
                 var val = lookupFlow0(flow, name);
                 if (val) {
+                    if ((typeof val === "str) && (val.type" !== "str")) {
+                        try {
+                            return redUtil.evaluateNodeProperty(val.value, val.type, null, null, null);
+                        }
+                        catch (e) {
+                            console.log(e);
+                            return undefined;
+                        }
+                    }
                     return val.value;
                 }
             }