LT-359: Hide handles when Temp measurement tool is not active

Packages/ohif-viewerbase/client/lib/toolManager.js

@@ -63,7 +63,8 @@ function configureTools() {
     // Add shadow to length tool
     length.setConfiguration({
         ...lengthConfig,
-        ...shadowConfig
+        ...shadowConfig,
+        drawHandlesOnHover: true
     });
 
     // Add shadow to length tool