Fix types for DialogManagerAndroid

Summary: We doesn;t support `onError: (string) => void,` is codegen so I change it to `onError: (error: string) => void,`

Reviewed By: TheSavior

Differential Revision: D16284628

fbshipit-source-id: a80a5da54823c827aa0bbe1f1f99613a35605489

Libraries/NativeModules/specs/NativeDialogManagerAndroid.js

@@ -41,7 +41,7 @@ export interface Spec extends TurboModule {
   |};
   +showAlert: (
     config: DialogOptions,
-    onError: (string) => void,
+    onError: (error: string) => void,
     onAction: (action: DialogAction, buttonKey?: DialogButtonKey) => void,
   ) => void;
 }