fix: BulkDataURI's UIDs undefined

# Problems
- Use wrong property `dicomJson` to get UIDs

# Solutions
- Replace to right property `uidObj`

models/DICOM/dicom-json-model.js

@@ -268,7 +268,7 @@ class DicomJsonBinaryDataModel {
             studyUID,
             seriesUID,
             sopInstanceUID
-        } = this.dicomJsonModel.dicomJson;
+        } = this.dicomJsonModel.uidObj;
 
         for(let i = 0; i < this.binaryKeys.length ; i++) {
             let binaryKey = this.binaryKeys[i];