Fix missing parentheses around throw expression (#20028)

Co-authored-by: fisker <lionkay@gmail.com>

changelog_unreleased/javascript/20028.md

@@ -0,0 +1,13 @@
+#### Keep necessary parentheses around `throw` expression (#20028 by @lazerg)
+
+<!-- prettier-ignore -->
+```jsx
+// Input
+(throw error);
+
+// Prettier stable
+throw error;
+
+// Prettier main
+(throw error);
+```