Window(fix[rename_window]): propagate exception instead of swallowing

why: Previously, rename_window silently swallowed exceptions and returned
self, making callers believe the rename succeeded when it failed.
what:
- Drop try/except, use proc.stderr + raise pattern matching rename_session
- Propagate LibTmuxException on tmux errors

Author: tony

src/libtmux/window.py

@@ -481,12 +481,11 @@ def rename_window(self, new_name: str) -> Window:
         lex.escape = " "
         lex.whitespace_split = False
 
-        try:
-            self.cmd("rename-window", new_name)
-            self.window_name = new_name
-        except Exception:
-            logger.exception("Error renaming window to %s", new_name)
+        proc = self.cmd("rename-window", new_name)
+        if proc.stderr:
+            raise exc.LibTmuxException(proc.stderr)
 
+        self.window_name = new_name
         self.refresh()
 
         return self