fix: 修复 SFTP 拖拽单个文件上传失败的问题

src/main/kotlin/app/termora/transport/FileSystemPanel.kt

@@ -239,7 +239,7 @@ class FileSystemPanel(
                             }
                         } else {
                             transportPanel.transport(
-                                sourceWorkdir = localFileSystemPanel.workdir,
+                                sourceWorkdir = path.path.parent,
                                 targetWorkdir = workdir,
                                 isSourceDirectory = false,
                                 sourcePath = path.path,

src/main/kotlin/app/termora/transport/TransportManager.kt

@@ -102,6 +102,7 @@ class TransportManager : Disposable {
                 }
 
                 if (transport == null) {
+                    needDelay = true
                     continue
                 }