Clean up redundant RxJS map operators in CzentrixService

[rohansaini-02]

Context

While auditing the integration layer, I noticed a few redundant observable mappings inside czentrix.service.ts.

Problem

Several HTTP calls use map(res => res) even though Angular’s HttpClient already returns the parsed response body directly. This identity mapping is a no-op that adds unnecessary callback overhead and visual noise.

Proposed Change

• Remove redundant map(res => res) operators
• Keep existing error handling intact
• Ensure no response structure changes occur

Affected Areas

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

Deliverables / Checklist

• Remove redundant observable mappings
• Verify build passes successfully
• Ensure no service regressions occur