fix(cliprdr)!: receiving a TemporaryDirectory PDU should not fail the svc (#1031)

- Fixes the Cliprdr `SvcProcessor` impl. to support handling a
`TemporaryDirectory` Clipboard PDU.
- Removes `ClipboardError::UnimplementedPdu` since it is no longer used

Author: ymarcus93

crates/ironrdp-cliprdr/src/lib.rs

@@ -28,16 +28,12 @@ pub type CliprdrSvcMessages<R> = SvcProcessorMessages<Cliprdr<R>>;
 
 #[derive(Debug)]
 enum ClipboardError {
-    UnimplementedPdu { pdu: &'static str },
     FormatListRejected,
 }
 
 impl core::fmt::Display for ClipboardError {
     fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         match self {
-            ClipboardError::UnimplementedPdu { pdu } => {
-                write!(f, "received clipboard PDU `{pdu}` is not implemented")
-            }
             ClipboardError::FormatListRejected => write!(f, "sent format list was rejected"),
         }
     }
@@ -333,9 +329,10 @@ impl<R: Role> SvcProcessor for Cliprdr<R> {
                 self.backend.on_file_contents_response(response);
                 Ok(Vec::new())
             }
-            _ => self.handle_error_transition(ClipboardError::UnimplementedPdu {
-                pdu: pdu.message_name(),
-            }),
+            ClipboardPdu::TemporaryDirectory(_) => {
+                // do nothing
+                Ok(Vec::new())
+            }
         }
     }