refactor : startDestination 변경

Author: jeeminimini

presentation/src/main/res/navigation/nav_graph.xml

@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/nav_graph"
-    app:startDestination="@id/missionFragment">
+    app:startDestination="@id/mapFragment">
 
     <fragment
         android:id="@+id/mapFragment"