Force reevaluation of composite columns in the cache if a value in the cache changes.

src/calibre/library/caches.py

@@ -914,6 +914,7 @@ class ResultCache(SearchQueryParser): # {{{
     def set(self, row, col, val, row_is_id=False):
         id = row if row_is_id else self._map_filtered[row]
         self._data[id][col] = val
+        self._data[id].refresh_composites()
 
     def get(self, row, col, row_is_id=False):
         id = row if row_is_id else self._map_filtered[row]