feat: 增加 TriggerThemeChanged 方法

Author: ArgoZhang

src/BootstrapBlazor/Services/DefaultThemeProvider.cs

@@ -20,11 +20,6 @@ public async ValueTask SetThemeAsync(string themeName)
     {
         var module = await jsRuntime.LoadUtility();
         await module.SetThemeAsync(themeName);
-
-        if (ThemeChangedAsync is not null)
-        {
-            await ThemeChangedAsync(themeName);
-        }
     }
 
     /// <summary>
@@ -35,4 +30,15 @@ public async ValueTask SetThemeAsync(string themeName)
         var module = await jsRuntime.LoadUtility();
         return await module.GetThemeAsync();
     }
+
+    /// <summary>
+    /// <inheritdoc/>
+    /// </summary>
+    public void TriggerThemeChanged()
+    {
+        if (ThemeChangedAsync is not null)
+        {
+            ThemeChangedAsync(string.Empty);
+        }
+    }
 }

src/BootstrapBlazor/Services/IThemeProvider.cs

@@ -27,4 +27,9 @@ public interface IThemeProvider
     /// The callback when theme changed
     /// </summary>
     Func<string, Task>? ThemeChangedAsync { get; set; }
+
+    /// <summary>
+    /// Trigger the theme changed event
+    /// </summary>
+    void TriggerThemeChanged();
 }