feat(fs): delegate win --server file reading to CM (#13736)

- Route Windows server-to-client file reads through CM instead of the connection layer
- Add FS IPC commands (ReadFile, CancelRead, SendConfirmForRead, ReadAllFiles) and CM data messages
  (ReadJobInitResult, FileBlockFromCM, FileReadDone, FileReadError, FileDigestFromCM, AllFilesResult)
- Track pending read validations and read jobs to coordinate CM-driven file transfers and clean them up
  on completion, cancellation, and errors
- Enforce a configurable file-transfer-max-files limit for ReadAllFiles and add stronger file name/path
  validation on the CM side
- Improve Flutter file transfer UX and robustness:
  - Use explicit percent/percentText progress fields
  - Derive speed and cancel actions from the active job
  - Handle job errors via FileModel.handleJobError and complete pending recursive tasks on failure
  - Wrap recursive directory operations in try/catch and await sendRemoveEmptyDir when removing empty directories

Signed-off-by: fufesou <linlong1266@gmail.com>

src/client/io_loop.rs

@@ -1676,6 +1676,7 @@ impl<T: InvokeUiSession> Remote<T> {
                         }
                         Some(file_response::Union::Error(e)) => {
                             let job_type = fs::remove_job(e.id, &mut self.write_jobs)
+                                .or_else(|| fs::remove_job(e.id, &mut self.read_jobs))
                                 .map(|j| j.r#type)
                                 .unwrap_or(fs::JobType::Generic);
                             match job_type {