add emailService to VCardAttributes

Closes https://code.vereign.com/code/signing-service-agent/issues/32

javascript/src/iframe/viamapi-iframe.js

@@ -1424,7 +1424,7 @@ const connection = Penpal.connectToParent({
     //   body: String if it is a text part (Content-Type = "text/...") or Uint8Array otherwise; filled for leaf MIME nodes
     //   parts: array of instances of the same object; filled for container MIME nodes (Content-Type = "multipart/...")
     // }
-    signVCard: async (passportUUID, senderEmail, attribs, text, html, parts = null) => {
+    signVCard: async (passportUUID, senderEmail, attribs, text, html, parts) => {
       const authenticationPublicKey = localStorage.getItem(
         "authenticatedIdentity"
       );
@@ -1437,6 +1437,15 @@ const connection = Penpal.connectToParent({
         return encodeResponse("400", "", "Identity not authenticated");
       }
 
+      try {
+        console.log("signVCard debug 1");
+        console.log({parts});
+        console.log("typeof parts", typeof parts);
+        console.log("typeof parts.unshift", typeof parts.unshift);
+      } catch(error) {
+        console.error(error);
+      }
+
       const messageUUID = makeid();
 
       const vCardAttribs = {
@@ -1507,7 +1516,7 @@ const connection = Penpal.connectToParent({
 
       debugger;
       try {
-        console.log("signVCard debug");
+        console.log("signVCard debug 2");
         console.log({parts});
         console.log("typeof parts", typeof parts);
         console.log("typeof parts.unshift", typeof parts.unshift);
@@ -1515,10 +1524,19 @@ const connection = Penpal.connectToParent({
         console.error(error);
       }
 
-      if (!parts) {
+      if (typeof parts === "undefined" || parts === null) {
         parts = [];
       }
 
+      try {
+        console.log("signVCard debug 3");
+        console.log({parts});
+        console.log("typeof parts", typeof parts);
+        console.log("typeof parts.unshift", typeof parts.unshift);
+      } catch(error) {
+        console.error(error);
+      }
+
       if (html) {
         const htmlPart = {
           headers: {