fix: use ecodeUri for $ref

jsonform.gadget.js

@@ -192,7 +192,7 @@
     if (!path) {
       path = "/";
     }
-    url = convertUrlToAbsolute(g, path, $ref, window.location);
+    url = convertUrlToAbsolute(g, path, decodeURI($ref), window.location);
     download_url = url.origin + url.pathname + url.search;
     mapped_schema = g.props.schemas[download_url];
     if (typeof mapped_schema === "string") {
@@ -201,7 +201,7 @@
     protocol = url.protocol;
     if (protocol === "http:" || protocol === "https:") {
       if (window.location.protocol !==  protocol) {
-        url = new URL($ref.replace(protocol + "//", window.location.protocol + "//"));
+        url = new URL(decodeURI($ref).replace(protocol + "//", window.location.protocol + "//"));
         // throw new Error("You cannot mixed http and https calls");
       }
     }