fix：emoji Popover

package.json

   },
   "private": true,
   "dependencies": {
-    "antd": "^3.6.6",
+    "antd": "^3.19.3",
     "axios": "^0.18.0",
     "dayjs": "^1.7.2",
     "js-cookie": "^2.2.0",

src/components/Editor/index.js

                   trigger="click"
                   placement={emojiPopoverPlacement}
                   autoAdjustOverflow={false}
+                  overlayStyle={{ zIndex: 999 }}
                   content={
                     <div
-                      style={{ width: 240 }}
+                      style={{ width: 240, height: 205 }}
                       onWheel={this.handleEmojiScroll}
                     >
                       <Emoji