chore: remove Paper and unsupported RN versions leftovers

[sgaczol]

Description

This PR removes leftovers of Paper or not supported anymore React Native versions - related code.

For android/build.gradle this means:

• libreact_render*.so, libreactnativejni.so and libreact_performance_timeline.so were dropped from packagingOptions.excludes — these libraries were merged into libreactnative.so in RN 0.76.
• the lifecycle-viewmodel-ktx:2.5.1 constraints block was removed — it fixed a duplicate-class conflict (androidx.lifecycle.ViewModelLazy) on older RN versions

Changes

• SearchBar.tsx: removed the Paper-only parseUndefinedPropsToSystemDefault which made autoCapitalize 'systemDefault' if undefined
• android/build.gradle: modified accordingly to the description above
• #import <cxxreact/ReactNativeVersion.h> removed from several files
• ScreenStackItem.tsx, TabsHost.ios.tsx: removed conditions related to RN < 0.82
• TabsHost.ios.types.ts: updated a comment

Before & after - visual documentation

N/A

Test plan

Build example apps.

Checklist

• Included code example that can be used to test this change.
• For visual changes, included screenshots / GIFs / recordings documenting the change.
• For API changes, updated relevant public types.
• Ensured that CI passes

[Copilot]

Pull request overview

This PR removes leftover code paths for the legacy Paper architecture and for unsupported older React Native versions (now targeting RN >= 0.82), simplifying platform/version conditionals across JS/TS, iOS native, and Android build configuration.

Changes:

• Simplifies iOS Tabs bottom accessory rendering by removing RN-version branching and always using the dual-render approach when available.
• Removes Paper-only SearchBar prop normalization and other RN-version-specific conditionals.
• Cleans up native iOS includes and Android Gradle packaging/dependency workarounds that were only needed for older RN versions.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/components/tabs/host/TabsHost.ios.types.ts	Updates docs to remove legacy/Paper and RN<0.82 behavioral notes for bottom accessory.
src/components/tabs/host/TabsHost.ios.tsx	Removes RN-version branching and legacy environment-change state for bottom accessory rendering.
src/components/SearchBar.tsx	Removes Paper-only prop parsing for autoCapitalize.
src/components/ScreenStackItem.tsx	Drops RN minor version gating for a formSheet positioning path (now relying on feature flag only).
ios/tabs/bottom-accessory/RNSTabsBottomAccessoryHelper.mm	Removes unused React Native version header include.
ios/tabs/bottom-accessory/RNSTabsBottomAccessoryContentComponentView.h	Removes unused React Native version header include (but leaves an empty preprocessor block).
ios/safe-area/RNSSafeAreaViewComponentView.mm	Removes unused React Native version header include.
ios/RNSScreenStackHeaderSubview.mm	Removes unused React Native version header include.
ios/RNSScreenStackHeaderConfig.mm	Removes unused React Native version header include.
ios/RNSScreen.mm	Removes unused React Native version header include.
ios/gamma/split/RNSSplitScreenShadowStateProxy.mm	Removes unused React Native version header include.
ios/conversion/RNSConversions-Tabs.mm	Removes unused React Native version header include.
android/build.gradle	Updates packaging excludes and removes a dependency constraint that was only needed for older RN versions.

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[sgaczol]

c89fd4f

[kkafar]

Looks good! Thank you!