Setting the namespace via the package attribute in the source AndroidManifest.xml is no longer supported

Hi @janicduplessis, I always get this message:

```
> Task :react-native-safe-area-context:processReleaseManifest
package="com.th3rdwave.safeareacontext" found in source AndroidManifest.xml:
React-native-MyApp/node_modules/react-native-safe-area-context/android/src/main/AndroidManifest.xml.
Setting the namespace via the package attribute in the source AndroidManifest.xml is no longer supported,
and the value is ignored.
Recommendation: remove package="com.th3rdwave.safeareacontext" from the source AndroidManifest.xml:
React-native-MyApp/node_modules/react-native-safe-area-context/android/src/main/AndroidManifest.xml.
```