Dashboard Schema V2: E2E setup (#99843)

* basic setup

* update CODEOWNERS

* update name

* add temp test that ensures we are loading schema V2 json in the UI

* update language

* test with yarn cache and combine steps

* revert combine

* remove commented out code

* Run current dashboard suite, make workflow optional

* make job always succeed

* Remove temp v2 suite

* don't run on draft PRs

* command for old arch

package.json

@@ -11,7 +11,8 @@
     "build:stats": "NODE_ENV=production webpack --progress --config scripts/webpack/webpack.stats.js",
     "dev": "NODE_ENV=dev nx exec -- webpack --config scripts/webpack/webpack.dev.js",
     "e2e": "./e2e/start-and-run-suite",
-    "e2e:scenes": "./e2e/start-and-run-suite scenes",
+    "e2e:old-arch": "./e2e/start-and-run-suite old-arch",
+    "e2e:schema-v2": "./e2e/start-and-run-suite dashboards-schema-v2",
     "e2e:debug": "./e2e/start-and-run-suite debug",
     "e2e:dev": "./e2e/start-and-run-suite dev",
     "e2e:benchmark:live": "./e2e/start-and-run-suite benchmark live",