bug fix and performance improvements

miniprogram/miniprogram_npm/tdesign-miniprogram/icon/icon.wxml

@@ -0,0 +1,15 @@
+<wxs src="../common/utils.wxs" module="_" />
+
+<view
+  class="{{ prefix ? prefix : classPrefix}} class {{componentPrefix}}-class"
+  style="{{_._style([iconStyle, style, customStyle])}}"
+  bind:tap="onTap"
+  aria-hidden="{{ariaHidden}}"
+  aria-label="{{ariaLabel}}"
+  aria-role="{{ariaRole}}"
+>
+  <view wx:if="{{ isImage }}" class="{{classPrefix}}--image">
+    <image src="{{ name }}" mode="aspectFit" class="{{classPrefix}}__image" />
+  </view>
+  <label wx:else class="{{ prefix ? prefix : classPrefix }}-{{ name }} {{ classPrefix }}-base"> </label>
+</view>