Add gating to the JS delta client on the remote debugger

Reviewed By: jeanlauliac

Differential Revision: D5940923

fbshipit-source-id: 1ef4cd52ef3567f2e726217636253802a2e6bb40

local-cli/server/util/debugger-ui/index.html

@@ -206,6 +206,10 @@
   connectToDebuggerProxy();
 
   async function getBlobUrl(url) {
+    if (window.location.hash.indexOf('useDeltaBundler') === -1) {
+      return url;
+    }
+
     return await window.deltaUrlToBlobUrl(url.replace('.bundle', '.delta'));
   }
 })();