fix: 修复3.1.2版本 canvasGetImageData、canvasToTempFilePath 高度错误问题

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

@@ -4,10 +4,10 @@
     :disable-scroll="disableScroll"
     v-on="_listeners"
   >
-    <canvas
-      ref="canvas"
-      width="300"
-      height="150"
+    <canvas
+      ref="canvas"
+      width="300"
+      height="150"
     />
     <div
       style="
@@ -21,9 +21,9 @@
     >
       <slot />
     </div>
-    <v-uni-resize-sensor
-      ref="sensor"
-      @resize="_resize"
+    <v-uni-resize-sensor
+      ref="sensor"
+      @resize="_resize"
     />
   </uni-canvas>
 </template>
@@ -372,7 +372,7 @@ export default {
       const maxWidth = canvas.offsetWidth - x
       width = width ? Math.min(width, maxWidth) : maxWidth
       const maxHeight = canvas.offsetHeight - y
-      height = height ? Math.min(height, maxWidth) : maxHeight
+      height = height ? Math.min(height, maxHeight) : maxHeight
       if (!hidpi) {
         if (!destWidth && !destHeight) {
           destWidth = Math.round(width * pixelRatio)