[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.

apps/desktop/src/auth/login/login.component.ts

@@ -49,10 +49,6 @@ export class LoginComponent extends BaseLoginComponent implements OnDestroy {
     return this.formGroup.value.email;
   }
 
-  get selfHostedDomain() {
-    return this.environmentService.hasBaseUrl() ? this.environmentService.getWebVaultUrl() : null;
-  }
-
   constructor(
     devicesApiService: DevicesApiServiceAbstraction,
     appIdService: AppIdService,
@@ -152,9 +148,6 @@ export class LoginComponent extends BaseLoginComponent implements OnDestroy {
     // eslint-disable-next-line rxjs/no-async-subscribe
     childComponent.onSaved.pipe(takeUntil(this.componentDestroyed$)).subscribe(async () => {
       modal.close();
-      // FIXME: Verify that this floating promise is intentional. If it is, add an explanatory comment and ensure there is proper error handling.
-      // eslint-disable-next-line @typescript-eslint/no-floating-promises
-      this.environmentSelector.updateEnvironmentInfo();
       await this.getLoginWithDevice(this.loggedEmail);
     });
   }

apps/desktop/src/auth/two-factor.component.ts

@@ -1,5 +1,6 @@
 import { Component, Inject, NgZone, ViewChild, ViewContainerRef } from "@angular/core";
 import { ActivatedRoute, Router } from "@angular/router";
+import { firstValueFrom } from "rxjs";
 
 import { TwoFactorComponent as BaseTwoFactorComponent } from "@bitwarden/angular/auth/components/two-factor.component";
 import { WINDOW } from "@bitwarden/angular/services/injection-tokens";
@@ -141,7 +142,7 @@ export class TwoFactorComponent extends BaseTwoFactorComponent {
     }
   }
 
-  override launchDuoFrameless() {
+  override async launchDuoFrameless() {
     const duoHandOffMessage = {
       title: this.i18nService.t("youSuccessfullyLoggedIn"),
       message: this.i18nService.t("youMayCloseThisWindow"),
@@ -150,8 +151,9 @@ export class TwoFactorComponent extends BaseTwoFactorComponent {
 
     // we're using the connector here as a way to set a cookie with translations
     // before continuing to the duo frameless url
+    const env = await firstValueFrom(this.environmentService.environment$);
     const launchUrl =
-      this.environmentService.getWebVaultUrl() +
+      env.getWebVaultUrl() +
       "/duo-redirect-connector.html" +
       "?duoFramelessUrl=" +
       encodeURIComponent(this.duoFramelessUrl) +