Visual improvements to debug mode for better information visibility

src/background/application.js

@@ -54,6 +54,7 @@ function createBackgroundApplication(overrides = {}) {
   });
   const spaResponseShapes = createSpaResponseShapes();
   const httpBackgroundJson = createHttpBackgroundJson({
+    previewDebugBody: createDebugBodyPreview,
     DEBUG_BODY_LIMIT: contracts.DEBUG_BODY_LIMIT,
     environment
   });