onKeyPress and onKeyDown typings (#9316)

* Update Checkbox.tsx

* Update button.tsx

components/button/button.tsx

@@ -47,6 +47,8 @@ export interface ButtonProps {
   onClick?: React.FormEventHandler<any>;
   onMouseUp?: React.FormEventHandler<any>;
   onMouseDown?: React.FormEventHandler<any>;
+  onKeyPress?: React.KeyboardEvent<any>;
+  onKeyDown?: React.KeyboardEvent<any>;
   tabIndex?: number;
   loading?: boolean | { delay?: number };
   disabled?: boolean;

components/checkbox/Checkbox.tsx

@@ -15,6 +15,8 @@ export interface AbstractCheckboxProps {
   onChange?: React.ChangeEventHandler<HTMLInputElement>;
   onMouseEnter?: React.MouseEventHandler<any>;
   onMouseLeave?: React.MouseEventHandler<any>;
+  onKeyPress?: React.KeyboardEvent<any>;
+  onKeyDown?: React.KeyboardEvent<any>;
   value?: any;
   tabIndex?: number;
   name?: string;