fix(mfa): drop the duplicated testID from the outcome BlockingView

The same testID was set on both ScreenWrapper and BlockingView since the
component was introduced, so getByTestId would match two elements. Keep
the one on ScreenWrapper, where testID is required and follows the
repo-wide screen convention.

Author: dariusz-biela

src/components/MultifactorAuthentication/components/OutcomeScreen/OutcomeScreenBase.tsx

@@ -91,7 +91,6 @@ function OutcomeScreenBase({headerTitle, illustration, iconWidth, iconHeight, ti
                         titleStyles={[styles.mb2, titleStyle]}
                         CustomSubtitle={CustomSubtitle}
                         containerStyle={[styles.ph5, padding]}
-                        testID="MultifactorAuthenticationOutcomeScreen"
                     />
                 </ScrollView>
                 <View style={[styles.flexRow, styles.m5, styles.mt0]}>