chore(eslint): curly [skip-lint] (#7959)

Now enforcing curly brackets on all if statements. Includes auto-fixer.


```ts
// ❌ Bad
if (foo) foo++;

// ✅ Good
if (foo) {
  foo++;
}
```




Note: this did not lint the `drizzle` package or any `db-*` packages.
This will be done in the future.

packages/next/src/views/LivePreview/Context/index.tsx

@@ -146,7 +146,9 @@ export const LivePreviewProvider: React.FC<LivePreviewProviderProps> = ({
     (type: 'iframe' | 'popup') => {
       setAppIsReady(false)
       setPreviewWindowType(type)
-      if (type === 'popup') openPopupWindow()
+      if (type === 'popup') {
+        openPopupWindow()
+      }
     },
     [openPopupWindow],
   )