SSR zone macrotask utilities, solve tx page initial state

frontend/src/app/services/zone-shim.service.ts

@@ -0,0 +1,14 @@
+import { Injectable } from '@angular/core';
+import { Observable } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ZoneService {
+
+  constructor() { }
+
+  wrapObservable<T>(obs: Observable<T>): Observable<T> {
+    return obs;
+  }
+}