fix: 修复 image 组件 widthFix 模式组件大小动态变化不生效的问题

src/core/view/components/image/index.vue

@@ -34,8 +34,7 @@ export default {
     return {
       originalWidth: 0,
       originalHeight: 0,
-      availHeight: '',
-      sizeFixed: false
+      availHeight: ''
     }
   },
   computed: {
@@ -106,7 +105,6 @@ export default {
     mode (newValue, oldValue) {
       if (oldValue === 'widthFix') {
         this.$el.style.height = this.availHeight
-        this.sizeFixed = false
       }
       if (newValue === 'widthFix' && this.ratio) {
         this._fixSize()
@@ -123,7 +121,7 @@ export default {
   },
   methods: {
     _resize () {
-      if (this.mode === 'widthFix' && !this.sizeFixed) {
+      if (this.mode === 'widthFix') {
         this._fixSize()
       }
     },
@@ -136,7 +134,6 @@ export default {
           height = Math.round(height / 2) * 2
         }
         this.$el.style.height = height + 'px'
-        this.sizeFixed = true
       }
     },
     _setContentImage () {