[SwipeableDrawer] fixed typescript warning "prop open undefined"

docs/pages/material-ui/api/swipeable-drawer.json

@@ -2,7 +2,7 @@
   "props": {
     "onClose": { "type": { "name": "func" }, "required": true },
     "onOpen": { "type": { "name": "func" }, "required": true },
-    "open": { "type": { "name": "bool" }, "required": true },
+    "open": { "type": { "name": "bool" } },
     "children": { "type": { "name": "node" } },
     "disableBackdropTransition": { "type": { "name": "bool" } },
     "disableDiscovery": { "type": { "name": "bool" } },

packages/mui-material/src/SwipeableDrawer/SwipeableDrawer.d.ts

@@ -47,6 +47,7 @@ export interface SwipeableDrawerProps extends Omit<DrawerProps, 'onClose' | 'ope
   onOpen: React.ReactEventHandler<{}>;
   /**
    * If `true`, the component is shown.
+   * @default false
    */
   open: boolean;
   /**

packages/mui-material/src/SwipeableDrawer/SwipeableDrawer.js

@@ -149,7 +149,7 @@ const SwipeableDrawer = React.forwardRef(function SwipeableDrawer(inProps, ref)
     ModalProps: { BackdropProps, ...ModalPropsProp } = {},
     onClose,
     onOpen,
-    open,
+    open = false,
     PaperProps = {},
     SwipeAreaProps,
     swipeAreaWidth = 20,
@@ -655,6 +655,7 @@ SwipeableDrawer.propTypes /* remove-proptypes */ = {
   onOpen: PropTypes.func.isRequired,
   /**
    * If `true`, the component is shown.
+   * @default false
    */
   open: PropTypes.bool.isRequired,
   /**