🐛 fix TagCloud style override bug (#3632)

src/components/Charts/TagCloud/index.js

@@ -51,9 +51,7 @@ class TagCloud extends Component {
 
   initTagCloud = () => {
     function getTextAttrs(cfg) {
-      return Object.assign(
-        {},
-        {
+      return Object.assign({}, cfg.style, {
         fillOpacity: cfg.opacity,
         fontSize: cfg.origin._origin.size,
         rotate: cfg.origin._origin.rotate,
@@ -62,9 +60,7 @@ class TagCloud extends Component {
         fontFamily: cfg.origin._origin.font,
         fill: cfg.color,
         textBaseline: 'Alphabetic',
-        },
-        cfg.style
-      );
+      });
     }
 
     // 给point注册一个词云的shape