Fix backward animation when navigating from work-email to purpose

The PURPOSE screen was using the default animationTypeForReplace: 'pop',
causing a backward animation when forceReplace navigates to it from
work-email. Add animationTypeForReplace: 'push' to match WORK_EMAIL.

Co-authored-by: Jayesh Mangwani <jayeshmangwani@users.noreply.github.com>

Author: MelvinBot

src/libs/Navigation/AppNavigator/Navigators/OnboardingModalNavigator.tsx

@@ -126,6 +126,7 @@ function OnboardingModalNavigator() {
                             <Stack.Screen
                                 name={SCREENS.ONBOARDING.PURPOSE}
                                 component={OnboardingPurpose}
+                                options={{animationTypeForReplace: 'push'}}
                             />
                             <Stack.Screen
                                 name={SCREENS.ONBOARDING.PERSONAL_DETAILS}