Preserve quotes for TSMethodSignature nodes named new (#19621)

changelog_unreleased/typescript/19621.md

@@ -0,0 +1,19 @@
+#### Preserve quotes for methods named `new` (#19621 by @kovsu)
+
+<!-- prettier-ignore -->
+```tsx
+// Input
+interface Container {
+  "new"(id: string): number;
+}
+
+// Prettier stable
+interface Container {
+  new(id: string): number;
+}
+
+// Prettier main
+interface Container {
+  "new"(id: string): number;
+}
+```