[PM-5979] Refactor EnvironmentService (#8040)

Refactor environment service to emit a single observable. This required significant changes to how the environment service behaves and tackles much of the tech debt planned for it.

libs/common/src/auth/services/anonymous-hub.service.ts

@@ -5,6 +5,7 @@ import {
   IHubProtocol,
 } from "@microsoft/signalr";
 import { MessagePackHubProtocol } from "@microsoft/signalr-protocol-msgpack";
+import { firstValueFrom } from "rxjs";
 
 import { LoginStrategyServiceAbstraction } from "../../../../auth/src/common/abstractions/login-strategy.service";
 import {
@@ -26,7 +27,7 @@ export class AnonymousHubService implements AnonymousHubServiceAbstraction {
   ) {}
 
   async createHubConnection(token: string) {
-    this.url = this.environmentService.getNotificationsUrl();
+    this.url = (await firstValueFrom(this.environmentService.environment$)).getNotificationsUrl();
 
     this.anonHubConnection = new HubConnectionBuilder()
       .withUrl(this.url + "/anonymous-hub?Token=" + token, {

libs/common/src/auth/services/webauthn-login/webauthn-login-api.service.ts

@@ -1,3 +1,5 @@
+import { firstValueFrom } from "rxjs";
+
 import { ApiService } from "../../../abstractions/api.service";
 import { EnvironmentService } from "../../../platform/abstractions/environment.service";
 import { WebAuthnLoginApiServiceAbstraction } from "../../abstractions/webauthn/webauthn-login-api.service.abstraction";
@@ -11,13 +13,14 @@ export class WebAuthnLoginApiService implements WebAuthnLoginApiServiceAbstracti
   ) {}
 
   async getCredentialAssertionOptions(): Promise<CredentialAssertionOptionsResponse> {
+    const env = await firstValueFrom(this.environmentService.environment$);
     const response = await this.apiService.send(
       "GET",
       `/accounts/webauthn/assertion-options`,
       null,
       false,
       true,
-      this.environmentService.getIdentityUrl(),
+      env.getIdentityUrl(),
     );
     return new CredentialAssertionOptionsResponse(response);
   }