Fix inconsistent member chain format (#17470)

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

changelog_unreleased/javascript/17470.md

@@ -0,0 +1,22 @@
+#### Fix inconsistent member chain format (#17470 by @fisker)
+
+<!-- prettier-ignore -->
+```jsx
+// Input
+s.get(u)?.trigger({ triggerKind: y.SignatureHelpTriggerKind.InvokeFooBarBaz123 });
+
+// Prettier stable (--parser=babel)
+s.get(u)?.trigger({
+  triggerKind: y.SignatureHelpTriggerKind.InvokeFooBarBaz123,
+});
+
+// Prettier stable (--parser=typescript)
+s
+  .get(u)
+  ?.trigger({ triggerKind: y.SignatureHelpTriggerKind.InvokeFooBarBaz123 });
+
+// Prettier main
+s.get(u)?.trigger({
+  triggerKind: y.SignatureHelpTriggerKind.InvokeFooBarBaz123,
+});
+```