ux: copied icon change duration

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

Author: love-linger

src/Views/CommitBaseInfo.axaml.cs

@@ -98,7 +98,7 @@ private async void OnCopyCommitSHA(object sender, RoutedEventArgs e)
                     IsSHACopied = false;
 
                 _iconResetTimer = null;
-            }, TimeSpan.FromSeconds(3));
+            }, TimeSpan.FromSeconds(2));
 
             IsSHACopied = true;
             e.Handled = true;