refactor(registerBootstrapBlazorModule): reset init field when items is empty (#5528)

* fix: 修复 id 为空后无法重新注册问题

* chore: bump version 9.4.5

Author: ArgoZhang

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.4.5-beta01</Version>
+    <Version>9.4.5</Version>
   </PropertyGroup>
 
   <ItemGroup>

src/BootstrapBlazor/wwwroot/modules/utility.js

@@ -828,6 +828,7 @@ export function registerBootstrapBlazorModule(name, identifier, callback) {
                 this._items = this._items.filter(item => item !== id);
             }
             if (this._items.length === 0 && cb) {
+                this._init = false;
                 cb();
             }
         }