update: modify DecisionResponse to include additional error handling information

Author: FarhanAnjum-opti

core-api/src/main/java/com/optimizely/ab/bucketing/DecisionService.java

@@ -931,7 +931,7 @@ private DecisionResponse<CmabDecision> getDecisionForCmabExperiment(@Nonnull Pro
  reasons.addInfo(errorMessage);
  logger.error("{} {}", errorMessage, e.getMessage());
 
- return new DecisionResponse<>(null, reasons);
+ return new DecisionResponse<>(null, reasons, true, null);
  }
  }