fix: Logs dialog does not layout properly sometimes with multiple displays

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/ViewModels/ViewLogs.cs

@@ -19,7 +19,6 @@ public CommandLog SelectedLog
         public ViewLogs(Repository repo)
         {
             _repo = repo;
-            _selectedLog = repo.Logs?.Count > 0 ? repo.Logs[0] : null;
         }
 
         public void ClearAll()

src/Views/ViewLogs.axaml.cs

@@ -1,3 +1,4 @@
+using System;
 using Avalonia.Controls;
 using Avalonia.Input;
 
@@ -11,6 +12,14 @@ public ViewLogs()
             InitializeComponent();
         }
 
+        protected override void OnOpened(EventArgs e)
+        {
+            base.OnOpened(e);
+
+            if (DataContext is ViewModels.ViewLogs vm && vm.Logs.Count > 0)
+                vm.SelectedLog = vm.Logs[0];
+        }
+
         private void OnLogContextRequested(object sender, ContextRequestedEventArgs e)
         {
             if (sender is not Grid { DataContext: ViewModels.CommandLog log } grid || DataContext is not ViewModels.ViewLogs vm)