"""Normalize text values by stripping leading/trailing whitespace and applying Unicode NFKC normalization.

Args:
    s (str): The input string to be normalized.

Returns:
    str: The normalized string with whitespace removed and Unicode NFKC normalization applied.
"""
You should write code starting with:
import unicodedata

def _normalize_text(s: str) -> str:
    # TODO: Implement this function
    pass

