Fix: Playwright e2e helpers - response body parsing

Author: helio3197

lib/generators/cypress_on_rails/templates/spec/playwright/support/on-rails.js

@@ -8,7 +8,7 @@ const appCommands = async (data) => {
   const response = await context.post('/__e2e__/command', { data })
 
   expect(response.ok()).toBeTruthy()
-  return response.body
+  return response.json();
 }
 
 const app = (name, options = {}) => appCommands({ name, options }).then((body) => body[0])
@@ -23,15 +23,15 @@ const appVcrInsertCassette = async (cassette_name, options) => {
   Object.keys(options).forEach(key => options[key] === undefined ? delete options[key] : {});
   const response = await context.post("/__e2e__/vcr/insert", {data: [cassette_name,options]});
   expect(response.ok()).toBeTruthy();
-  return response.body;
+  return response.json();
 }
 
 const appVcrEjectCassette = async () => {
   const context = await contextPromise;
 
   const response = await context.post("/__e2e__/vcr/eject");
   expect(response.ok()).toBeTruthy();
-  return response.body;
+  return response.json();
 }
 
 export { appCommands, app, appScenario, appEval, appFactories, appVcrInsertCassette, appVcrEjectCassette }