refactor: 修改新建视图默认样式属性，优先使用仪表板属性

frontend/src/components/canvas/custom-component/component-list.js

@@ -18,8 +18,8 @@ export const BASE_MOBILE_STYLE = {
 
 // 组件仪表板样式
 export const COMMON_BACKGROUND = {
-  enable: false,
-  backgroundType: 'innerImage',
+  enable: true,
+  backgroundType: 'color',
   color: '#FFFFFF',
   innerImage: null,
   outerImage: null,

frontend/src/views/chart/chart/chart.js

@@ -225,8 +225,8 @@ export const DEFAULT_YAXIS_EXT_STYLE = {
 }
 export const DEFAULT_BACKGROUND_COLOR = {
   color: '#ffffff',
-  alpha: 100,
-  borderRadius: 5
+  alpha: 0,
+  borderRadius: 0
 }
 export const DEFAULT_SPLIT = {
   name: {