fix(option list): fix size when options removed

Fix the OptionList size not updating correctly after removing options.

Fixes #5728 (comment)

Author: TomJGooding

src/textual/widgets/_option_list.py

@@ -534,7 +534,7 @@ def _remove_option(self, option: Option) -> Self:
             del self._id_to_option[option._id]
         del self._option_to_index[option]
         self.highlighted = self.highlighted
-        self.refresh()
+        self._clear_caches()
         return self
 
     def _pre_remove_option(self, option: Option, index: int) -> None: