Issue 6025: NFT back press issue

[protoshadowmaker]

Fixed:

• Back press now moves the expanded NFT view to the normal state instead of closing the screen.
• Collapsed preview is now correctly positioned in the navigation bar on both cutout and non-cutout devices.

Added:

• Development configuration to prevent wiping the production version of the app.

To do:

• Create a org.mytonwallet.app.dev Firebase app and add the necessary configuration to google-services.json.

Screen_recording_20251105_171443.mp4

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👷 Deploy request for mytonwallet-tma pending review.

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