Fix displaying of system messages by default

[olisikh]

System messages (experience, picked up items) are enabled by default after logging in, but no messages are shown.
This PR fixes the issue.

[gemini-code-assist]

Summary of Changes

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This pull request addresses an issue where system messages were not visible by default in the chat log window. By explicitly setting a flag during initialization, it ensures that users will see system-generated messages without needing to manually enable them, improving the out-of-the-box user experience.

Highlights

• Default System Message Display: Ensured that system messages are displayed by default in the chat log window by initializing the m_bShowMessages flag to true during the window's initialization.

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[gemini-code-assist]

Code Review

This pull request addresses an issue where system messages were not displayed by default due to an uninitialized member variable. The change correctly initializes m_bShowMessages to true in the CNewUISystemLogWindow::Init method, ensuring system messages are shown as intended. My review includes a suggestion to adopt a more modern C++ initialization practice for better code quality and maintainability.

[gemini-code-assist]

While this correctly initializes m_bShowMessages and fixes the bug, a more modern C++ approach is to initialize members directly in the constructor's initializer list or, since C++11 features like constexpr are used elsewhere, via in-class member initialization in the header file. This practice ensures all members are initialized before the constructor body executes and centralizes initialization, which improves code clarity and maintainability.

For example, in NewUIChatLogWindow.h:

bool m_bShowMessages = true;