chore(window.__eq__): Flip conditions

Author: tony

src/libtmux/window.py

@@ -552,9 +552,9 @@ def attached_pane(self) -> t.Optional["Pane"]:
     # Dunder
     #
     def __eq__(self, other: object) -> bool:
-        if not isinstance(other, Window):
-            return False
-        return self.window_id == other.window_id
+        if isinstance(other, Window):
+            return self.window_id == other.window_id
+        return False
 
     def __repr__(self) -> str:
         return "{}({} {}:{}, {})".format(