fix: Android group opacity prop

[jakex7]

Summary

Currently, on Android, when the opacity prop is applied to G or Svg elements, it is rendered incorrectly. Instead of rendering the children "offscreen" and then applying the opacity to the entire result, the child elements themselves are rendered with the specified opacity.

Fixes #2046

Example

import {View} from 'react-native';
import {G, Rect, Svg} from 'react-native-svg';

export default function App() {
  return (
    <View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
      <Svg width="150" height="150" viewBox="0 0 150 150">
        <G opacity="0.5">
          <Rect width="100" height="100" fill="red" />
          <Rect x="50" y="50" width="100" height="100" fill="green" />
        </G>
      </Svg>

      <Svg width="150" height="150" viewBox="0 0 150 150" opacity="0.5">
        <Rect width="100" height="100" fill="red" />
        <Rect x="50" y="50" width="100" height="100" fill="green" />
      </Svg>
    </View>
  );
}

Before	After	Web reference

Test Plan

Example above is available in test-examples app as Test2417

Compatibility

OS	Implemented
Android	✅

[bohdanprog]

Closes #1430