termwiz: windows: allow ESC to be recognized again

After processing a batch of input records, we need to effectively
flush any pending ambiguous sequences in order to register a lone
ESC key press.

termwiz/src/input.rs

@@ -460,6 +460,7 @@ mod windows {
                     _ => {}
                 }
             }
+            self.process_bytes(callback, false);
         }
     }
 }