LT-239: Handle the error if the last imported file is not dcm file

- Add message label in progress dialog

Packages/viewerbase/client/components/basic/progressDialog/progressDialog.html

@@ -9,7 +9,9 @@
                     {{progressStatus}}
                 </div>
             </div>
-            <div class="message">{{progressMessage}}</div>
+            <div id="message">
+                {{{progressMessage}}}
+            </div>
         </div>
     </div>
 </template>