fix(ui): use birthtime for creation time on mac & win (#472)

* fix(PreviewPanel): Use birthtime for creation time

st_ctime does not provide accurate creation time on MacOS, and as of
Python 3.12 is deprecated for Windows. On these two platforms use
st_birthtime, but fall back to st_ctime on linux.

* mypy errors

Author: seakrueger

tagstudio/src/qt/widgets/preview_panel.py

@@ -492,7 +492,11 @@ def add_field_to_selected(self, field_list: list[QModelIndex]):
     def update_date_label(self, filepath: Path | None = None) -> None:
         """Update the "Date Created" and "Date Modified" file property labels."""
         if filepath and filepath.is_file():
-            created: dt = dt.fromtimestamp(filepath.stat().st_ctime)
+            created: dt = None
+            if platform.system() == "Windows" or platform.system() == "Darwin":
+                created = dt.fromtimestamp(filepath.stat().st_birthtime)  # type: ignore[attr-defined]
+            else:
+                created = dt.fromtimestamp(filepath.stat().st_ctime)
             modified: dt = dt.fromtimestamp(filepath.stat().st_mtime)
             self.date_created_label.setText(
                 f"<b>Date Created:</b> {dt.strftime(created, "%a, %x, %X")}"