!8544 修改Slider组件blockSize属性获取 相关XTS

Merge pull request !8544 from chensi10/sliderTest

arkui/ace_ets_components_ux/ace_ets_component_slider/src/main/ets/TestAbility/pages/Index.ets

@@ -767,7 +767,7 @@ struct SliderTest {
               style: SliderStyle.InSet
             })
               .key('ArkUX_Stage_Slider_blockSize_1800')
-              .blockSize({ width: "20lsp", height: "20lsp" })
+              .blockSize({ width: "20lpx", height: "20lpx" })
           }
           ListItem() {
             Slider({

arkui/ace_ets_components_ux/ace_ets_component_slider/src/main/resources/base/element/string.json

@@ -35,7 +35,6 @@
       {
         "name":"block_size_height_test",
         "value":"50vp"
-      },
-
+      }
     ]
   }
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