fix: minor fixes

Co-authored-by: Samuel Allan <samuel.allan@fastmail.com>

Author: pkulkark

branching_xblock/branching_xblock.py

@@ -517,11 +517,7 @@ def _current_score(self) -> int:
         """
         Compute the learner's accumulated score from score history.
         """
-        total = 0
-        for awarded_points in (self.score_history or []):
-            if isinstance(awarded_points, int):
-                total += awarded_points
-        return max(0, total)
+        return sum(self.score_history)
 
     def get_current_node(self) -> Optional[dict[str, Any]]:
         """

branching_xblock/static/js/src/branching_xblock.js

@@ -390,6 +390,8 @@ function BranchingXBlock(runtime, element) {
         isReportVisible = true;
         if (currentState) {
             updateView(currentState);
+        } else {
+            refreshView();
         }
     });