fix: preserve scroll position while streaming

[fmueller]

Summary

• prevent conversation scroll pane from auto-scrolling during streamed responses
• add regression test for scroll position
• note scroll fix in changelog

Testing

• gradle build
• gradle check

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https://chatgpt.com/codex/tasks/task_e_689ceb0718ec832daa10aa9fd4a377f7

[github-actions]

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[github-actions]

Qodana Community for JVM

It seems all right 👌

No new problems were found according to the checks applied

💡 Qodana analysis was run in the pull request mode: only the changed files were checked

View the detailed Qodana report

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• Use GitHub Code Scanning with Qodana
• Host Qodana report at GitHub Pages
• Inspect and use qodana.sarif.json (see the Qodana SARIF format for details)

To get *.log files or any other Qodana artifacts, run the action with upload-result option set to true,
so that the action will upload the files as the job artifacts:

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        with:
          upload-result: true

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