Merge pull request #1719 from dataease/pr@dev@fix_panel-edit

fix: 仪表板背景由颜色切换为图片，未加图片时背景颜色依然存在问题

frontend/src/components/canvas/components/Editor/PreviewEject.vue

@@ -18,6 +18,11 @@ export default {
       mainHeight: '100vh!important'
     }
   },
+  watch: {
+    '$route.params.reportId': function() {
+      this.restore()
+    }
+  },
   computed: {
     bgStyle() {
       if (this.backScreenShot) {

frontend/src/views/panel/edit/index.vue

@@ -344,7 +344,7 @@ export default {
     mobileCanvasStyle() {
       let style
       if (this.canvasStyleData.openCommonStyle) {
-        if (this.canvasStyleData.panel.backgroundType === 'image' && this.canvasStyleData.panel.imageUrl) {
+        if (this.canvasStyleData.panel.backgroundType === 'image' && typeof (this.canvasStyleData.panel.imageUrl) === 'string') {
           style = {
             background: `url(${this.canvasStyleData.panel.imageUrl}) no-repeat`
           }