Add legacy RN close recovery flow

[ben-kaufman]

Summary

• Bumps bitkit-core to v0.1.63 for legacy RN native SegWit close-output recovery support.
• Adds a Dev Settings recovery flow with a configurable scan index limit, defaulting to 10,000.
• Scans for affected close outputs, shows the found amount/output count, prepares a sweep preview, and broadcasts only after explicit user confirmation.

Notes

• Recovery sweeps to the current wallet on-chain address using the app's current network and Electrum config.
• The flow is intentionally in Dev Settings so support can start it manually instead of auto-sending user funds.
• The UI reuses existing Bitkit settings/navigation/button/text field components to stay aligned with the app style.

Validation

• Build attempted with the requested old Xcode using xcodebuild -project Bitkit.xcodeproj -scheme Bitkit -configuration Debug -destination "platform=iOS Simulator,name=iPhone 16" -derivedDataPath /private/tmp/bitkit-ios-recovery-dd build.
• Local iOS compile result is still pending: SwiftPM package resolution hung while resolving cached packages (bitkit-core, vss-rust-client-ffi, etc.).

[pwltr]

tACK

[ovitrif]

utAck