Fix unstable trailing comment on a nested parenthesized assignment (#19893)

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

changelog_unreleased/javascript/19893.md

@@ -0,0 +1,16 @@
+#### Fix unstable trailing comment on a nested parenthesized assignment (#19893 by @Kjubikstronk)
+
+<!-- prettier-ignore -->
+```jsx
+// Input
+assigned = (a = c /* comment */);
+
+// Prettier stable (First format)
+assigned = a = c /* comment */;
+
+// Prettier stable (Second format)
+assigned = a = c; /* comment */
+
+// Prettier main
+assigned = a = c; /* comment */
+```