[Clean Code] Remove Redundant RxJS map(res => res) Mappings in CzentrixService

[rohansaini-02]

Context

While auditing the integration layer, I noticed redundant observable mapping operators inside czentrix.service.ts.

Problem

Several HTTP methods pipe their POST calls into map(res => res). Since Angular's standard HttpClient already resolves and returns the parsed JSON response body automatically, this identity mapping is a no-op that adds unnecessary boilerplate and reduces readability.

Proposed Change

• Remove redundant .pipe(map(res => res)) statements.
• Keep existing error handling (catchError) intact.
• Ensure no changes to response structure or method signatures occur.

Affected Areas

• File: v19/src/app/core/services/czentrix.service.ts
• Methods: getAgentStatus(), getCallDetails(), manualDial(), userLogout()

Deliverables / Checklist

• Remove redundant observable mappings from czentrix.service.ts
• Verify build passes successfully without warnings
• Ensure no service regressions occur during runtime execution