fix(dev): update webpack proxy config syntax for Orthanc dev mode (#5531)

* fix(dev): update webpack proxy config syntax for Orthanc dev mode

* Add datasources and rename dicomweb to orthancProxy datasource

---------

Co-authored-by: Nilesh Gautam <nilesh.gautam@radpretation.ai>
Co-authored-by: Bill Wallace <wayfarer3130@gmail.com>

platform/app/.webpack/webpack.pwa.js

@@ -183,15 +183,16 @@ module.exports = (env, argv) => {
 
   if (hasProxy) {
     mergedConfig.devServer.proxy = mergedConfig.devServer.proxy || {};
-    mergedConfig.devServer.proxy = {
-      [PROXY_TARGET]: {
+    mergedConfig.devServer.proxy = [
+      {
+        context: [PROXY_PATH_REWRITE_FROM || '/dicomweb'],
         target: PROXY_DOMAIN,
         changeOrigin: true,
         pathRewrite: {
           [`^${PROXY_PATH_REWRITE_FROM}`]: PROXY_PATH_REWRITE_TO,
         },
       },
-    };
+    ];
   }
 
   if (isProdBuild) {