Fix buttons in navigation bar on iOS 26

[martinmitrevski]

🔗 Issue Links

Part of https://linear.app/stream/issue/IOS-1072/ios-26-fixes.

🎯 Goal

There is a glass effect container for nav bar buttons, which doesn't look good when we use images. Additionally, it covered the overlay which in our case was the online indicator.

📝 Summary

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🛠 Implementation

Provide a detailed description of the implementation and explain your decisions if you find them relevant.

🎨 Showcase

Add relevant screenshots and/or videos/gifs to easily see what this PR changes, if applicable.

Before	After
img	img

🧪 Manual Testing Notes

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☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change should be manually QAed
• Changelog is updated with client-facing changes
• Changelog is updated with new localization keys
• New code is covered by unit tests
• Documentation has been updated in the docs-content repo

[github-actions]

	1 Message
📖	There seems to be app changes but CHANGELOG wasn't modified. Please include an entry if the PR includes user-facing changes. You can find it at CHANGELOG.md.

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[github-actions]

Public Interface

🚀 No changes affecting the public interface.

[martinmitrevski]

Note, we should merge this when Xcode GM is out