refactor: update song parameter type to Map in playlist and song dialogs

Author: gokadzev

lib/screens/playlist_page.dart

@@ -593,7 +593,7 @@ class _PlaylistPageState extends State<PlaylistPage> {
     }
   }
 
-  Widget _buildSongListItem(dynamic song, int index, bool isRemovable) {
+  Widget _buildSongListItem(Map song, int index, bool isRemovable) {
     final totalItems = _sourceList.length;
     final borderRadius = getItemBorderRadius(index, totalItems);
     final isUserCreatedPlaylist = _playlist?['source'] == 'user-created';

lib/services/common_services.dart

@@ -511,7 +511,7 @@ Future<String?> getSongLyrics(String? artist, String title) async {
   return lyrics.value;
 }
 
-Future<bool> makeSongOffline(dynamic song) async {
+Future<bool> makeSongOffline(Map song) async {
   try {
     final String? ytid = song['ytid'];
 
@@ -524,7 +524,7 @@ Future<bool> makeSongOffline(dynamic song) async {
       return true;
     }
 
-    final offlineSong = Map<String, dynamic>.from(song as Map);
+    final offlineSong = Map.from(song);
 
     final audioPath = FilePaths.getAudioPath(ytid);
     final audioFile = File(audioPath);

lib/utilities/playlist_dialogs.dart

@@ -26,7 +26,7 @@ import 'package:musify/services/playlists_manager.dart';
 import 'package:musify/utilities/flutter_toast.dart';
 import 'package:musify/utilities/playlist_image_picker.dart';
 
-void showCreatePlaylistDialog(BuildContext context, {dynamic songToAdd}) {
+void showCreatePlaylistDialog(BuildContext context, {Map? songToAdd}) {
   var id = '';
   var customPlaylistName = '';
   var isYouTubeMode = songToAdd == null;

lib/widgets/song_bar.dart

@@ -790,7 +790,7 @@ class _OnlineArtwork extends StatelessWidget {
   }
 }
 
-void showAddToPlaylistDialog(BuildContext context, dynamic song) {
+void showAddToPlaylistDialog(BuildContext context, Map song) {
   showDialog(
     context: context,
     builder: (BuildContext context) {