[v4] remove graphiql default export (#3706)

* aa

* aa

* polish

Author: dimaMachina

.changeset/gentle-bugs-mix.md

@@ -0,0 +1,19 @@
+---
+'graphiql': major
+---
+
+remove default export
+
+## Migration
+
+### Before
+
+```jsx
+import GraphiQL from 'graphiql'
+```
+
+### After
+
+```jsx
+import { GraphiQL } from 'graphiql'
+```

packages/graphiql/src/index.ts

@@ -23,8 +23,4 @@ export type {
 } from './components/GraphiQL';
 export type { GraphiQLProviderProps } from '@graphiql/react';
 
-export {
-  GraphiQLInterface,
-  GraphiQL,
-  GraphiQL as default,
-} from './components/GraphiQL';
+export { GraphiQLInterface, GraphiQL } from './components/GraphiQL';