Forward the nested view style as contentContainerStyle

## Describe the feature

Export a contentContainerStyle prop to apply to the inner View inside masked view:

```javascript
export default class MaskedView extends React.Component {
_hasWarnedInvalidRenderMask = false;

render(): React.Node {
const { maskElement, children, contentContainerStyle, ...otherViewProps } = this.props;

if (!React.isValidElement(maskElement)) {
if (!this._hasWarnedInvalidRenderMask) {
console.warn(
'MaskedView: Invalid `maskElement` prop was passed to MaskedView. ' +
'Expected a React Element. No mask will render.',
);
this._hasWarnedInvalidRenderMask = true;
}
return {children};
}

return (


{maskElement}

{children}

);
}
}
```

Today we have it patched locally but it would be ideal if it were possible without the patch

## Motivation

The current `StyleSheet.absoluteFill` is bringing problems in some cases, we have to calculate the size before apply the mask and is kinda annoying when we need to update the size after render.