misc: load json as text (#36515)

wcs/qommon/misc.py

@@ -513,7 +513,7 @@ def json_encode_helper(d, charset):
 
 def json_loads(value, charset=None):
     if six.PY3:
-        return json.loads(value)
+        return json.loads(force_text(value))
     charset = (get_publisher() and get_publisher().site_charset) or 'utf-8'
     return json_encode_helper(json.loads(value), charset)