fix: missing dataclass decorator (after merge conflict resolution)

Author: AbduazizZiyodov

Lib/_colorize.py

@@ -260,6 +260,7 @@ def color_by_opname(self, opname: str) -> str:
 
         return self.reset
 
+@dataclass(frozen=True, kw_only=True)
 class FancyCompleter(ThemeSection):
     # functions and methods
     function: builtins.str = ANSIColors.BOLD_BLUE