fix: 拾取循环补 DoEvents 消息泵，修复高亮框/信息条冻结不刷新

resources/desktop-picker.ps1

@@ -139,6 +139,7 @@ while ($true) {
   $prevSpace = $space
   $prevPgUp = $pgUp
   $prevPgDn = $pgDn
+  [System.Windows.Forms.Application]::DoEvents()
   Start-Sleep -Milliseconds 60
 }