chore: move show_sensitive warning

out of datadir options

freqtrade/configuration/configuration.py

@@ -238,20 +238,13 @@ class Configuration:
                     )
         if not config.get("exportdirectory"):
             config["exportdirectory"] = config["user_data_dir"] / "backtest_results"
-        if not config.get("exportfilename"):
+
-            config["exportfilename"] = None
+        config["exportfilename"] = config.get("exportfilename", None)
         if config.get("exportfilename"):
             # ensure exportfilename is a Path object
             config["exportfilename"] = Path(config["exportfilename"])
         config["exportdirectory"] = Path(config["exportdirectory"])
 
-        if self.args.get("show_sensitive"):
-            logger.warning(
-                "Sensitive information will be shown in the upcoming output. "
-                "Please make sure to never share this output without redacting "
-                "the information yourself."
-            )
-
     def _process_optimize_options(self, config: Config) -> None:
         # This will override the strategy configuration
         self._args_to_config(
@@ -319,6 +312,13 @@ class Configuration:
 
         self._process_datadir_options(config)
 
+        if self.args.get("show_sensitive"):
+            logger.warning(
+                "Sensitive information will be shown in the upcoming output. "
+                "Please make sure to never share this output without redacting "
+                "the information yourself."
+            )
+
         self._args_to_config(
             config,
             argname="strategy_list",