Merge pull request #7906 from MoYuan-CN/fix/7904

fix(ModDownload): 跟进新的 NeoForge 命名方式以正确识别测试版

Plain Craft Launcher 2/Modules/Minecraft/ModDownload.vb

@@ -844,7 +844,7 @@
         Public Sub New(ApiName As String)
             IsNeoForge = True
             Me.ApiName = ApiName
-            IsBeta = ApiName.Contains("beta")
+            IsBeta = ApiName.Contains("beta") OrElse ApiName.Contains("alpha")
             If ApiName.Contains("1.20.1") Then '1.20.1-47.1.99
                 VersionName = ApiName.Replace("1.20.1-", "")
                 Version = New Version("19." & VersionName)