Pass isRTL to the stage wrapper in both player and editor modes.

Discovered this while trying to pass other props to the stage wrapper, we were not passing isRTL to the stage wrapper, causing ask/answer bubble to not display the right direction.

src/components/gui/gui.jsx

@@ -335,6 +335,7 @@ const GUIComponent = props => {
                         <Box className={classNames(styles.stageAndTargetWrapper, styles[stageSize])}>
                             <StageWrapper
                                 isRendererSupported={isRendererSupported}
+                                isRtl={isRtl}
                                 stageSize={stageSize}
                                 vm={vm}
                             />

src/components/stage-wrapper/stage-wrapper.jsx

@@ -49,7 +49,7 @@ const StageWrapperComponent = function (props) {
 
 StageWrapperComponent.propTypes = {
     isRendererSupported: PropTypes.bool.isRequired,
-    isRtl: PropTypes.bool,
+    isRtl: PropTypes.bool.isRequired,
     loading: PropTypes.bool,
     stageSize: PropTypes.oneOf(Object.keys(STAGE_DISPLAY_SIZES)).isRequired,
     vm: PropTypes.instanceOf(VM).isRequired