Fix misplacement of comments after arrow (#17421)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: fisker Cheung <lionkay@gmail.com>

changelog_unreleased/typescript/17421.md

@@ -0,0 +1,30 @@
+#### Fix misplacement of comments after arrow (#17421 by @o-m12a, @t-mangoe)
+
+<!-- prettier-ignore -->
+```ts
+// Input
+export const test = (): any => /* first line
+second line
+*/
+    null;
+
+// Prettier stable
+export const test = (): any /* first line
+second line
+*/ => null;
+
+// Prettier stable (Second format)
+SyntaxError: Unexpected token (1:22)
+> 1 | export const test = (): any /* first line
+    |                      ^
+  2 | second line
+  3 | */ => null;
+  4 |
+
+// Prettier main
+export const test = (): any =>
+  /* first line
+second line
+*/
+  null;
+```