fix(add): isLoading of restored state should be false

Author: hoc081098

feature-add/src/main/java/com/hoc/flowmvi/ui/add/AddVM.kt

@@ -39,7 +39,7 @@ class AddVM(
   override val viewState: StateFlow<ViewState>
 
   init {
-    val initialVS = savedStateHandle.get<ViewState?>(VIEW_STATE).copy(isLoading = false)
+    val initialVS = savedStateHandle.get<ViewState?>(VIEW_STATE)?.copy(isLoading = false)
       ?: ViewState.initial()
     Timber.tag(logTag).d("[ADD_VM] initialVS: $initialVS")