feat(Markdown): support default Language (#411)

* chore: 支持语言自动设置

* chore: bump version 9.0.2

Author: ArgoZhang

src/components/BootstrapBlazor.Markdown/BootstrapBlazor.Markdown.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.0.1</Version>
+    <Version>9.0.2</Version>
   </PropertyGroup>
 
   <PropertyGroup>

src/components/BootstrapBlazor.Markdown/Components/Markdown/Markdown.razor.cs

@@ -3,6 +3,7 @@
 // Website: https://www.blazor.zone or https://argozhang.github.io/
 
 using Microsoft.AspNetCore.Components;
+using System.Globalization;
 using System.Reflection.Metadata;
 
 namespace BootstrapBlazor.Components;
@@ -97,7 +98,7 @@ protected override void OnInitialized()
 
         Option.PreviewStyle = PreviewStyle.ToDescriptionString();
         Option.InitialEditType = InitialEditType.ToDescriptionString();
-        Option.Language = Language;
+        Option.Language = Language ?? CultureInfo.CurrentUICulture.Name;
         Option.Placeholder = Placeholder;
         Option.Height = $"{Height}px";
         Option.MinHeight = $"{MinHeight}px";