msal-node: Added Logging to HttpClient

[Robbie-Microsoft]

This will help customers better debug their failed network requests.

Turned HttpClient into a proper class. Now it can utilize instance variable re-use.

[Copilot]

Pull Request Overview

Adds enhanced logging to the msal-node HttpClient to aid debugging of failed network requests and refactors helper functions into class instance methods.

• Introduces a Logger to HttpClient with PII-aware URL and header logging.
• Refactors previous standalone helper functions (network requests, body parsing, request destruction logic) into private instance methods.
• Updates timeout error messages to include duration.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
lib/msal-node/test/network/HttpClient.spec.ts	Adjusts expected timeout error message to include duration.
lib/msal-node/src/network/HttpClient.ts	Adds logger integration, converts utility functions to private methods, improves timeout/error handling and PII-aware logging.
change/@azure-msal-node-edb8d743-61e2-4f42-a970-92e01f619a49.json	Beachball change file documenting the patch update.