[Bug]: geocoding_darwin 1.0.2 Package.swift trailing commas cause unexpected ',' separator when resolving Swift Package Manager dependencies

### Please check the following before submitting a new issue.

- [x] I have searched the [existing issues](https://github.com/baseflow/flutter-geocoding/issues).
- [x] I have carefully [read the documentation](https://github.com/Baseflow/flutter-geocoding/blob/main/geocoding/README.md) and verified I have added the required platform specific configuration.

### Please select affected platform(s)

- [ ] Android
- [x] iOS

### Steps to reproduce

1. Add geocoding: ^5.0.0 to a Flutter project.
2. Enable SPM: flutter config --enable-swift-package-manager.
3. Run flutter build ios (or flutter run).

### Expected results

run

### Actual results

Building a Flutter iOS app with the experimental Swift Package Manager integration fails at dependency resolution with:
/Users/.../ios/Flutter/ephemeral/Packages/.packages/geocoding_darwin-1.0.2/Package.swift:23:9: error: unexpected ',' separator
21 | .process("PrivacyInfo.xcprivacy"),
22 | ],
23 | )
| `- error: unexpected ',' separator

### Code sample

none

### Screenshots or video

Screenshots or video demonstration

[Upload media here]

### Version

5.0.0

### Flutter Doctor output

Doctor output

```console
[✓] Flutter (Channel stable, 3.44.8, on macOS 15.3.1 24D70 darwin-arm64, locale zh-Hans-CN) [585ms]
• Flutter version 3.44.8 on channel stable at /Users/../work/Development/Flutter/flutter_3.44.8
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 058e0af2c2 (13 days ago), 2026-07-23 10:56:21 -0700
• Engine revision 0cd610717b
• Dart version 3.12.2
• DevTools version 2.57.0
• Pub download mirror https://pub.flutter-io.cn/
• Flutter download mirror https://storage.flutter-io.cn/
• Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets, enable-swift-package-manager,
omit-legacy-version-file, enable-lldb-debugging, enable-uiscene-migration

[!] Android toolchain - develop for Android devices (Android SDK version 36.0.0) [5.8s]
• Android SDK at /Users/fuminghui/Library/Android/sdk
• Emulator version [32.1.12.0](http://32.1.12.0/) (build_id 9751036) (CL:N/A)
• Platform android-36, build-tools 36.0.0
• Java binary at: /Library/Java/JavaVirtualMachines/jdk-17.jdk/Contents/Home/bin/java
This JDK is specified in your Flutter configuration.
To change the current JDK, run: `flutter config --jdk-dir="path/to/jdk"`.
• Java version Java(TM) SE Runtime Environment (build 17.0.14+8-LTS-191)
! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses

[✓] Xcode - develop for iOS and macOS (Xcode 16.2) [1,512ms]
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 16C5032a
• CocoaPods version 1.16.2

[✓] Chrome - develop for the web [6ms]
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Connected device (4 available) [12.0s]
• TEST (mobile) • 00008101-001A50303C44001E • ios • iOS 26.2.1 23C71
• iPhone 15 Pro (mobile) • 42C56AEC-00A0-4EA2-8EA8-EDD436DC60CA • ios • com.apple.CoreSimulator.SimRuntime.iOS-17-5 (simulator)
• macOS (desktop) • macos • darwin-arm64 • macOS 15.3.1 24D70 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 151.0.7922.75
```

Start with the geocoding_darwin 1.0.2 Package.swift shown in the error, especially lines 21-23, and inspect the package declaration around the trailing commas. Enable Swift Package Manager and run flutter build ios to verify dependency resolution succeeds without the unexpected separator error.

Written by the indexing model from the issue text.