Update the Compare slider start position to the middle (#4052)

Author: comfyui-wiki

src/components/templates/thumbnails/CompareSliderThumbnail.spec.ts

@@ -63,7 +63,7 @@ describe('CompareSliderThumbnail', () => {
   it('positions slider based on default value', () => {
     const wrapper = mountThumbnail()
     const divider = wrapper.find('.bg-white\\/30')
-    expect(divider.attributes('style')).toContain('left: 21%')
+    expect(divider.attributes('style')).toContain('left: 50%')
   })
 
   it('passes isHovered prop to BaseThumbnail', () => {

src/components/templates/thumbnails/CompareSliderThumbnail.vue

@@ -38,7 +38,7 @@ import { ref, watch } from 'vue'
 
 import BaseThumbnail from '@/components/templates/thumbnails/BaseThumbnail.vue'
 
-const SLIDER_START_POSITION = 21
+const SLIDER_START_POSITION = 50
 
 const { baseImageSrc, overlayImageSrc, isHovered, isVideo } = defineProps<{
   baseImageSrc: string