Fix: Set reinstallUser flag when sync restore user skips onboarding

The SYNC_RESTORE secondary CTA handler was sending ShowSkipOnboardingOption
without setting reinstallUser = true, unlike the analogous
INITIAL_REINSTALL_USER handler. A sync restore user necessarily had the
app installed before, so they should be treated as a reinstall user.
This ensures correct event data when the user later reaches INPUT_SCREEN.

Author: cursoragent

app/src/main/java/com/duckduckgo/app/onboarding/ui/page/WelcomePageViewModel.kt

@@ -266,6 +266,7 @@ class WelcomePageViewModel @Inject constructor(
             SYNC_RESTORE -> {
                 viewModelScope.launch {
                     logcat { "Sync-AutoRestore: user skipped restore" }
+                    reinstallUser = true
                     _commands.send(ShowSkipOnboardingOption)
                 }
             }