fixes UserFile detection of file changes with watchfiles

src/backend/user_files.py

@@ -133,6 +133,7 @@ class UserFile:
         async for changes in awatch(self.path):
             try:
                 ignored = 0
+                edited = False
 
                 for change in changes:
                     if change[0] in (Change.added, Change.modified):
@@ -143,9 +144,10 @@ class UserFile:
                             continue
 
                         await self.update_from_file()
+                        edited = True
                         self._mtime = mtime
 
-                    elif change[0] == Change.deleted:
+                    elif not edited and change[0] == Change.deleted:
                         self._mtime      = None
                         self.data        = self.default_data
                         self._need_write = self.create_missing