use node's native fetch, add ensureLicense flag and update snapshots (#28279)

e2e-tests/playwright/README.md

@@ -15,8 +15,6 @@ cd server && make run-server
 
 #### 2. Install dependencies and run the test.
 
-Note: If you're using Node.js version 18 and above, you may need to set `NODE_OPTIONS='--no-experimental-fetch'`.
-
 ```
 # Install npm packages
 npm i
@@ -51,7 +49,6 @@ docker run -it --rm -v "$(pwd):/mattermost/" --ipc=host mcr.microsoft.com/playwr
 #### 2. Inside the docker container
 
 ```
-export NODE_OPTIONS='--no-experimental-fetch'
 export PW_BASE_URL=http://host.docker.internal:8065
 export PW_HEADLESS=true
 cd mattermost/e2e-tests/playwright