Remove console.debug statements from HttpClient constructor

[Copilot]

The HttpClient constructor was logging debug messages to the console that were appearing in users' browsers, causing a poor user experience. These messages would appear repeatedly whenever an HttpClient instance was created:

Registered middlewares: _RetryHandler, _RedirectHandler, ParametersNameDecodingHandler, UserAgentHandler, HeadersInspectionHandler, UrlReplaceHandler, CustomFetchHandler
Hint: To improve performance, use MiddlewareFactory.getPerformanceMiddlewares(customFetch) instead of MiddlewareFactory.getDefaultMiddlewares(customFetch)

Changes Made

• Removed two console.debug() statements from the HttpClient constructor
• Preserved all existing functionality and middleware setup logic
• No breaking changes to the public API

Testing

• All existing tests continue to pass (176 tests)
• Build process works correctly
• Verified that debug messages are no longer output during HttpClient instantiation

This is a minimal, surgical fix that eliminates the unwanted console output while maintaining full backward compatibility.

Fixes #1767.

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