debug(NFLmusic): 优化异常打印信息

- 在加载歌词失败时，添加"lyric: "前缀以明确错误来源
- 在外部循环捕获异常时，添加更具体的错误信息前缀

NFLmusic.py

@@ -1028,7 +1028,7 @@ def tick():
                                 try:
                                     lyric = lyrics.load_lyrics(f"{path}/{music_file_without_endswith}.lrc")
                                 except Exception as e:
-                                    print(e)
+                                    print("lyric: ", e)
                                     lyric = {}
                                 music_player.set_format_of_time(
                                     lang.get(la, "ui.playing.text.time_format",
@@ -1050,7 +1050,7 @@ def tick():
                                     try:
                                         lyric = lyrics.load_lyrics(f"{path}/{music_file_without_endswith}.lrc")
                                     except Exception as e:
-                                        print(e)
+                                        print("lyric: ", e)
                                         lyric = {}
                                 except IndexError:
                                     music_file_name = music_dir[0]
@@ -1065,7 +1065,7 @@ def tick():
                                              {"_music_": music_file_without_endswith}))
                                 playmusic(music_playing)
                     except Exception as e:
-                        print(e)
+                        print("External loop error: ", e)
                         pass
             else:
                 playing_progress.state(["!disabled"])