sql: limit FTS preprocessing to NFKD normalization (#45285)

wcs/sql.py

@@ -21,6 +21,7 @@ import psycopg2.extras
 import datetime
 import time
 import re
+import unicodedata
 try:
     import cPickle as pickle
 except ImportError:
@@ -1659,7 +1660,8 @@ class SqlDataMixin(SqlMixin):
                             WHERE id = %%(id)s''' % self._table_name
         cur.execute(sql_statement, {
             'id': self.id,
-            'fts': qommon.misc.simplify(' '.join(fts_strings), space=' ')})
+            'fts': unicodedata.normalize('NFKD', ' '.join(fts_strings)),
+        })
 
         conn.commit()
         cur.close()