Copy track orig_metadata after plugins have been run

This makes the behavior consistent with the album and avoids that we need to rerun the plugins on file matches.

picard/album.py

@@ -422,7 +422,6 @@ class Album(DataObject, Item):
         tm.copy(metadata)
         track_to_metadata(track_node, track)
         tm["~absolutetracknumber"] = absolutetracknumber
-        track.orig_metadata.copy(tm)
         track._customize_metadata()
 
         self._new_metadata.length += tm.length
@@ -440,6 +439,7 @@ class Album(DataObject, Item):
         except BaseException:
             self.error_append(traceback.format_exc())
 
+        track.orig_metadata.copy(tm)
         return track
 
     def load(self, priority=False, refresh=False):

picard/track.py

@@ -415,9 +415,9 @@ class NonAlbumTrack(Track):
     def _parse_recording(self, recording):
         m = self.metadata
         recording_to_metadata(recording, m, self)
-        self.orig_metadata.copy(m)
         self._customize_metadata()
         run_track_metadata_processors(self.album, m, recording)
+        self.orig_metadata.copy(m)
         self.run_scripts(m)
         self.loaded = True
         self.status = None