Fix duplicate dangling comments in experimental ternaries (#18963)

changelog_unreleased/javascript/18963.md

@@ -0,0 +1,26 @@
+#### Fix duplicated comments in empty branches with `experimentalTernaries` (#18963 by @kovsu)
+
+<!-- prettier-ignore -->
+```jsx
+// Input
+condition ? ifTrue
+: [
+    // Hello, world!
+  ];
+
+// Prettier stable (--experimental-ternaries)
+condition ? ifTrue
+  // Hello, world!
+: (
+  [
+    // Hello, world!
+  ]
+);
+
+// Prettier main (--experimental-ternaries)
+condition ? ifTrue : (
+  [
+    // Hello, world!
+  ]
+);
+```