e2e: add tests for translations (#114390)

e2e: add tests for translations

e2e-playwright/test-plugins/grafana-test-panel/plugin.json

@@ -0,0 +1,26 @@
+{
+  "$schema": "https://raw.githubusercontent.com/grafana/grafana/main/docs/sources/developers/plugins/plugin.schema.json",
+  "type": "panel",
+  "name": "Grafana E2ETest Panel",
+  "id": "grafana-e2etest-panel",
+  "info": {
+    "keywords": ["panel"],
+    "description": "",
+    "author": {
+      "name": "Grafana"
+    },
+    "logos": {
+      "small": "img/logo.svg",
+      "large": "img/logo.svg"
+    },
+    "links": [],
+    "screenshots": [],
+    "version": "%VERSION%",
+    "updated": "%TODAY%"
+  },
+  "dependencies": {
+    "grafanaDependency": ">=12.0.0",
+    "plugins": []
+  },
+  "languages": ["en-US", "es-ES", "sv-SE"]
+}