[IOS] there is an extra tiny line when set border and border-radius to a View

Description

When I add a border and border-radius to a View, an extra tiny line with the same color as the View background is created. This line will be explicitly visible when you set the background and border to the same color.

This happens on IOS only btw.

Steps to reproduce

1. add the following code to your component you can see the issue

<View style={{ width: 200, height: 200, backgroundColor: 'white', padding: 20 }}>
      <View
       style={{
         width: 30,
         height: 30,
         backgroundColor: 'blue',
         borderRadius: 50,
         borderWidth: 5,
         borderColor: 'white',
         borderStyle: 'solid',
       }}
      />
   </View>

React Native Version

0.76.5

Affected Platforms

Runtime - iOS, Build - MacOS

Output of npx @react-native-community/cli info

System:
  OS: macOS 13.7.3
  CPU: (8) x64 Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
  Memory: 2.30 GB / 16.00 GB
  Shell:
    version: 3.2.57
    path: /bin/bash
Binaries:
  Node:
    version: 22.0.0
    path: ~/.nvm/versions/node/v22.0.0/bin/node
  Yarn:
    version: 4.5.0
    path: ~/.nvm/versions/node/v22.0.0/bin/yarn
  npm:
    version: 10.5.1
    path: ~/.nvm/versions/node/v22.0.0/bin/npm
  Watchman:
    version: 2024.11.04.00
    path: /usr/local/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /usr/local/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 23.2
      - iOS 17.2
      - macOS 14.2
      - tvOS 17.2
      - visionOS 1.0
      - watchOS 10.2
  Android SDK: Not Found
IDEs:
  Android Studio: 2022.3 AI-223.8836.35.2231.10811636
  Xcode:
    version: 15.2/15C500b
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.13
    path: /Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home/bin/javac
  Ruby:
    version: 2.6.10
    path: /usr/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react: Not Found
  react-native: Not Found
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

info React Native v0.78.0 is now available (your project is running on v0.76.7).
info Changelog: https://github.com/facebook/react-native/releases/tag/v0.78.0
info Diff: https://react-native-community.github.io/upgrade-helper/?from=0.76.7&to=0.78.0
info For more info, check out "https://reactnative.dev/docs/upgrading?os=macos".

Stacktrace or Logs

Not Set

Reproducer

https://codesandbox.io/p/live/38941380-ed25-44a0-afae-83260029f2c1

Screenshots and Videos

从提供的 React Native View 复现代码开始，使用报告中的 border、border-radius、background 和 padding 样式，确认 iOS 上多出的线条。调查带边框、圆角 View 的 iOS 渲染路径；完成的标准是可见线条消失，同时不改变预期的边框或填充，并为此配置提供覆盖。