fix.PLONDS系统逻辑问题修复

LanMountainDesktop.Tests/PlondsClientServiceTests.cs

@@ -507,6 +507,7 @@ public sealed class PlondsClientServiceTests : IDisposable
     private static PlondsClientDownloads CreateDownloads(string? changedUrl, string? filesUrl)
     {
         return new PlondsClientDownloads(
+            ReleaseTag: "v1.4.0",
             GitHub: null,
             S3: new PlondsS3Downloads(
                 Bucket: "bucket",

LanMountainDesktop/Services/Plonds/PlondsClientDownloads.cs

@@ -1,6 +1,7 @@
 namespace LanMountainDesktop.Services.Plonds;
 
 internal sealed record PlondsClientDownloads(
+    string? ReleaseTag,
     PlondsGitHubDownloads? GitHub,
     PlondsS3Downloads? S3);