Fix notify open file mode

Author: benjamin-dcs

custom_components/file_plusplus/notify.py

@@ -49,7 +49,8 @@ def send_message(self, message: str, title: str | None = None) -> None:
         file: TextIO
         filepath = self._file_path
         try:
-            with open(filepath, "a", encoding="utf8") as file:
+            # File++ - Mode to 'w'
+            with open(filepath, "w", encoding="utf8") as file:
                 # File++ - Delete header
                 if self._add_timestamp:
                     text = f"{dt_util.utcnow().isoformat()} {message}\n"
@@ -61,4 +62,4 @@ def send_message(self, message: str, title: str | None = None) -> None:
                 translation_domain=DOMAIN,
                 translation_key="write_access_failed",
                 translation_placeholders={"filename": filepath, "exc": f"{exc!r}"},
-            ) from exc
+            ) from exc