Grafana UI: Fix TS error property css is missing in type (#38078)

packages/grafana-ui/src/types/emotion-core-stub.d.ts

@@ -0,0 +1,4 @@
+// This stub is required due to Storybook 6.x reliance on @emotion/core
+// which causes conflicts with emotion 11 types resulting in bundled
+// components throwing ts error `Property 'css' is missing in type...`
+export {};

packages/grafana-ui/tsconfig.build.json

@@ -1,4 +1,11 @@
 {
+  "compilerOptions": {
+    "paths": {
+      "@emotion/core": ["../../src/types/emotion-core-stub.d.ts"],
+      "@grafana/slate-react": ["slate-react"],
+      "@grafana/ui": ["."]
+    }
+  },
   "exclude": ["**/*.story.tsx", "**/*.test.ts*", "**/*.tmpl.ts", "dist", "node_modules", "src/utils/storybook"],
   "extends": "./tsconfig.json"
 }