fix: dashbaord state for already present bool (#26)

Author: ItsAdityaKSingh

lib/bloc/dashboard_bloc/dashboard_bloc.dart

@@ -30,12 +30,16 @@ class DashboardBloc extends Bloc<DashboardEvent, DashboardState> {
             alreadyPresent: true);
       } else {
         yield state.copyWith(
-            files: List.from(state.files)..addAll(event.files));
+            files: List.from(state.files)..addAll(event.files),
+            alreadyPresent: false);
+        ;
       }
     } else if (event is FileRemoved) {
-      yield state.copyWith(files: List.from(state.files)..remove(event.file));
+      yield state.copyWith(
+          files: List.from(state.files)..remove(event.file),
+          alreadyPresent: false);
     } else if (event is RemoveAllFiles) {
-      yield state.copyWith(files: []);
+      yield state.copyWith(files: [], alreadyPresent: false);
     }
   }
 }