MM-52642 CLD-6352 MM-54007 Prepare setup for Playwright pipeline (#24647)

* pipeline(playwright): prepare setup for playwright

* feedback address

* clean up readme

* Fix docker-compose command and definition for dashboard

* fix the dashboard

* ignore dashboard when formatting

---------

Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: Mario Vitale <mvitale1989@hotmail.com>

e2e-tests/playwright/package.json

@@ -1,15 +1,16 @@
 {
     "scripts": {
-        "test": "cross-env PW_SNAPSHOT_ENABLE=true playwright test",
-        "percy": "cross-env PERCY_TOKEN=$PERCY_TOKEN PW_PERCY_ENABLE=true percy exec -- playwright test --project=chrome --project=iphone --project=ipad",
+        "test": "cross-env NODE_OPTIONS='--no-experimental-fetch' PW_SNAPSHOT_ENABLE=true playwright test",
+        "test:update-snapshots": "cross-env NODE_OPTIONS='--no-experimental-fetch' PW_SNAPSHOT_ENABLE=true playwright test --update-snapshots",
+        "percy": "cross-env NODE_OPTIONS='--no-experimental-fetch' PERCY_TOKEN=$PERCY_TOKEN PW_PERCY_ENABLE=true percy exec -- playwright test --project=chrome --project=ipad",
         "tsc": "tsc -b",
         "lint": "eslint . --ext .js,.ts",
         "prettier": "prettier . --check",
         "prettier:fix": "prettier --write .",
         "check": "npm run tsc && npm run lint && npm run prettier",
         "codegen": "cross-env playwright codegen $PW_BASE_URL",
-        "playwright-ui": "playwright test --ui",
-        "test-slomo": "cross-env PW_SNAPSHOT_ENABLE=true PW_SLOWMO=1000 playwright test",
+        "playwright-ui": "cross-env NODE_OPTIONS='--no-experimental-fetch' playwright test --ui",
+        "test-slomo": "cross-env NODE_OPTIONS='--no-experimental-fetch' PW_SNAPSHOT_ENABLE=true PW_SLOWMO=1000 playwright test",
         "show-report": "npx playwright show-report",
         "postinstall": "npx playwright install"
     },
@@ -17,7 +18,7 @@
         "@axe-core/playwright": "4.7.3",
         "@percy/cli": "1.27.1",
         "@percy/playwright": "1.0.4",
-        "@playwright/test": "1.38.0",
+        "@playwright/test": "1.38.1",
         "async-wait-until": "2.0.12",
         "axe-core": "4.8.1",
         "chalk": "4.1.2",