fix: prevent the native context menu from appearing when right-clicking on a measurement or angle (https://github.com/OHIF/Viewers/issues/1406) (#1469)

platform/ui/src/components/contextMenu/ContextMenu.js

@@ -1,11 +1,10 @@
-import React from 'react';
 import PropTypes from 'prop-types';
-
+import React from 'react';
 import './ContextMenu.css';
 
 const ContextMenu = ({ items, onClick }) => {
   return (
-    <div className="ContextMenu">
+    <div className="ContextMenu" onContextMenu={e => e.preventDefault()}>
       <ul>
         {items.map((item, index) => (
           <li key={index}>