fix(Interview Feedback): type cast user input with unsupported type

Author: vinyselopal

hrms/hr/doctype/interview_feedback/interview_feedback.py

@@ -58,7 +58,7 @@ def calculate_average_rating(self):
 		total_rating = 0
 		for d in self.skill_assessment:
 			if d.rating:
-				total_rating += d.rating
+				total_rating += flt(d.rating)
 
 		self.average_rating = flt(
 			total_rating / len(self.skill_assessment) if len(self.skill_assessment) else 0

hrms/hr/doctype/interview_feedback/test_interview_feedback.py

@@ -49,7 +49,7 @@ def test_average_ratings_on_feedback_submission_and_cancellation(self):
 		total_rating = 0
 		for d in feedback_1.skill_assessment:
 			if d.rating:
-				total_rating += d.rating
+				total_rating += flt(d.rating)
 
 		avg_rating = flt(
 			total_rating / len(feedback_1.skill_assessment) if len(feedback_1.skill_assessment) else 0