feat: add i18n support for password expired errors

[uroslates]

Closes https://jira.tools.sap/browse/CXSPA-10815

[uroslates]

QA steps

Changing password expiration rules for testing purpose (can be tricky - since targets all system users).

Workaround for handing this can be following:

1. Create mocked interceptor similar to below and provide it in your app module (as specified in class docs below):

import {
  HttpErrorResponse,
  HttpEvent,
  HttpHandler,
  HttpInterceptor,
  HttpRequest,
} from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable, throwError } from 'rxjs';

/**
 * This interceptor is used to mock HTTP responses for specific API endpoints.
 *
 * It intercepts HTTP requests and returns mock data for the defined endpoints,
 * while allowing other requests to pass through unmodified.
 *
 * To use this interceptor, provide it in your Angular module's providers array.
 * Example ([in app.module.ts](https://github.com/SAP/spartacus/blob/20b375201f22ecdff1ad850bccbae763969102a5/projects/storefrontapp/src/app/app.module.ts#L68)):
 * {
 *  provide: HTTP_INTERCEPTORS,
 *  useExisting: MockInterceptor,
 *  multi: true,
 * }
 */
@Injectable({ providedIn: 'root' })
export class MockInterceptor implements HttpInterceptor {
  intercept(
    req: HttpRequest<any>,
    next: HttpHandler
  ): Observable<HttpEvent<any>> {
    // Define the API endpoint you want to mock
    const OAUTH_ENDPOINT = '/authorizationserver/oauth/token';
    const mockUrl = OAUTH_ENDPOINT;

    if (req.url.endsWith(mockUrl)) {
      // Return mock data as an HTTP response
      const mockResponse = new HttpErrorResponse({
        status: 400,
        error: {
          error: 'invalid_grant',
          // error_description: "Bad credentials",
          error_description: 'Password expired for the user: John Doe',
        },
        url: req.url,
      });
      // Use throwError to simulate an error response
      return throwError(() => mockResponse);
    }

    // Pass through other requests unmodified
    return next.handle(req);
  }
}

2. Trying to login will now trigger expected error.
3. Verify tests are passing.

Alternatively you could follow the description of https://jira.tools.sap/browse/CXSPA-10815 to see how to change Password expiration rule in Backoffice (but that can affect others if done on shared system). So above is safer for me.

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spartacus    Run #50635

Run Properties:   Passed #50635  •  b84f66da99 ℹ️: Merge 7629abbadb48a338af207ce424091cae96619de4 into 4712fa33e00eb6cf2a7c8a298c2f...

Project	spartacus
Branch Review	feature/CXSPA-10815
Run status	Passed #50635
Run duration	03m 32s
Commit	b84f66da99 ℹ️: Merge 7629abbadb48a338af207ce424091cae96619de4 into 4712fa33e00eb6cf2a7c8a298c2f...
Committer	Uros Lates
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