fix(macos): resolve type mismatch in sd open

Convert std::io::Error to anyhow::Error when opening destination on macOS without authopen feature.

Signed-off-by: Sen <kawkoi@proton.me>

bb-flasher-sd/src/pal/macos.rs

@@ -18,7 +18,7 @@ pub(crate) async fn open(dst: &Path) -> Result<File> {
         .create(false)
         .open(dst)
         .await
-        .map_err(|e| Error::FailedToOpenDestination { source: e })?
+        .map_err(|e| Error::FailedToOpenDestination { source: e.into() })?
         .into_std()
         .await;