Application becomes unusable after downloading session JSON

**To Reproduce**
Steps to reproduce the behavior:
1. Open Goose Desktop binary
2. Find a chat with a very long text history window
3. View JSON from the top middle menu option drop-down thingy
4. Copy JSON from the newly opened modal window
5. You will find that it is now unusable, the application cannot click on anything. You can select text but you cannot click back into the application itself

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**Expected behavior**
I expected to be able to download a JSON output of my chat with Goose, and then return to using the application as normal. However, after downloading my chat history with Goose, it becomes unusable

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**Screenshots**

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**Please provide the following information**
- **OS & Arch:** linux 7.2.2-1-cachyos-bore x86_64
- **Interface:** UI
- **Version:** 1.49.0
- **Extensions enabled:** analyze, scheduler, apps, developer, skills, summon, tom, Extension Manager, todo
- **Provider & Model:** custom_llama_cpp_2 - Gemma-4-MTP

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**Additional context**
You guys are the best. If I can send you some cash for the whole team, that'd be dope. Tip 20 bucks to all of you. Thank you for doing this. Appreciate your hard work.

Look for the UI component that handles the 'View JSON' menu option and the modal window that displays the JSON. The bug likely involves a focus or event handling issue after the modal closes. Start by reproducing the issue locally with a long chat history, then examine the code around modal dismissal and UI state restoration. Check if click events are being blocked or if focus is trapped.

索引モデルが issue の本文から書いたものです。