[iOS] Crash when adding new RSS feed via Explore > Search

Platform

Mobile - iOS

Describe the bug

The Folo iOS app frequently crashes when adding a new RSS feed through the Explore tab.
在 iOS 版本的 Folo App 中，當嘗試添加新的 RSS 源時，應用經常閃退。

Entry ID

https://rss.beauty/rss?url=https://yongzs1218.github.io/feed.xml

Relevant Information

Steps to reproduce

1. Open Folo on iOS
2. Tap the bottom navigation bar "Explore"
3. Tap the "Search" field
4. Enter a valid RSS URL
5. Tap the search result
6. The app crashes and exits unexpectedly

重現步驟

1. 打開 Folo iOS App
2. 點擊底部欄的「探索」
3. 點擊「搜尋」框
4. 輸入一個有效的 RSS URL
5. 點擊搜索結果
6. App 崩潰並退出

Reproduction Video

https://github.com/user-attachments/assets/b3c77ecb-bf0a-4cac-a73d-06bf04dd9ce2

Environment

App Version: 0.2.10-144
iOS Version: 26.2

Validations

• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• This issue is valid

Contributions

• I am willing to submit a PR to fix this issue
• I am willing to submit a PR with failing tests (actually just go ahead and do it, thanks!)

Start by reproducing the crash in the iOS Explore > Search flow using the provided RSS entry URL and the listed app and iOS versions. Trace the flow from the search result tap, using the reproduction video as context; done means adding the feed no longer crashes the app.