Swift Package Manager support is broken in 6.5.3 and 6.6.2

### Version of the agora_rtc_engine

6.5.3, 6.6.2

### Platforms affected

- [ ] Android
- [ ] iOS
- [x] macOS
- [ ] Windows
- [ ] Web

### Steps to reproduce

1. Use the example project in the Agora-Flutter-SDK
2. Enable swift package manager support in the pubspec.yaml file
3. Clean and rebuild
4. Try and call engine.joinChannelWithUserAccount(...)

### Expected results

joinChannelWithUserAccount does not throw exceptions when provided valid arguments.

### Actual results

joinChannelWithUserAccount will always throw RTC error -2 on macOS but works with the same arguments on Android.

If you disable SPM and try the exact same process it works on macOS.

### Code sample

Set you yaml like this
Code sample

```dart
flutter:
config:
enable-swift-package-manager: true
```

I beleive this is because for the 6.5.3 and 6.6.2 release the Package.swift files were NOT updated to use the new versions of the AgoraRtcEngine_macOS and AgoraRtcWrapper when compared to the cocoapods files. Manually updating these files to their correct version seems to resolve this issue.

This issue may also be affecting iOS as that Package.swift file also hasn't been updated in 9 months.

### Screenshots or Video

Screenshots / Video demonstration

### Logs

Logs

```console
```

### Flutter Doctor output

Doctor output

```console
ios % flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.38.10, on macOS 26.3 25D125 darwin-arm64, locale
en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version
36.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 26.2)
[✓] Chrome - develop for the web
[✓] Connected device (3 available)
[✓] Network resources

• No issues found!
ios %
```