Move listener declaration out of the lambda.

[ArekMiszcz]

With current shape, an example is throwing segmentation fault error so people rising new issues.
This simple fix solving that problem into this example.

[CLAassistant]

All committers have signed the CLA.

[Copilot]

Pull Request Overview

This PR addresses a segmentation fault error by moving the declaration of the NRtDefaultClientListener out of the lambda, thereby ensuring its lifetime extends for the duration of the asynchronous callbacks.

• Moved listener declaration to the outer scope.
• Updated lambda capture list to include the listener.

Comments suppressed due to low confidence (1)

example/main.cpp:73

• Ensure that the listener's lifetime covers the entire duration needed for asynchronous callbacks, as capturing it by reference may lead to lifetime issues if the surrounding scope ends early.

auto loginSucceededCallback = [&done, &connectSucceededCallback, &rtErrorCallback, &client, &rtClient, &listener](Nakama::NSessionPtr session) {