feat(ImageViewer): support dynamic update Url parameter (#6510)

* refactor: 预览组件 Id 提前生成

* refactor: 更新时重构 img 引用

Author: ArgoZhang

src/BootstrapBlazor/Components/ImageViewer/ImageViewer.razor.cs

@@ -219,5 +219,5 @@ private RenderFragment RenderChildContent() => builder =>
 
     private bool ShowPreviewList => PreviewList != null && PreviewList.Count > 0;
 
-    private string? PreviewerId => ShowPreviewList ? $"prev_{Id}" : null;
+    private string? PreviewerId => $"prev_{Id}";
 }

src/BootstrapBlazor/Components/ImageViewer/ImageViewer.razor.js

@@ -58,6 +58,8 @@ export function update(id, prevList, index) {
     }
 
     viewer.prevList = prevList
+    viewer.img = viewer.element.querySelector('img')
+
     setListeners(viewer, index)
 }