fix: youtube playlist inconsistency

Author: InfinityLoop1308

library/src/commonMain/kotlin/project/pipepipe/app/database/DatabaseOperations.kt

@@ -587,7 +587,7 @@ object DatabaseOperations {
     suspend fun insertOrReplaceRemotePlaylist(
         serviceId: String,
         name: String?,
-        url: String?,
+        url: String,
         thumbnailUrl: String?,
         uploader: String?,
         streamCount: Long?,

library/src/commonMain/kotlin/project/pipepipe/app/viewmodel/PlaylistDetailViewModel.kt

@@ -119,12 +119,10 @@ class PlaylistDetailViewModel : BaseViewModel<PlaylistUiState>(PlaylistUiState()
 
         // Check if this remote playlist is bookmarked in database
         val playlistInfo = result.info as? PlaylistInfo
-        val bookmarkedPlaylist = if (playlistInfo?.serviceId != null) {
-            DatabaseOperations.getRemotePlaylistByUrl(playlistInfo.url)
-        } else null
+        val bookmarkedPlaylist = DatabaseOperations.getRemotePlaylistByUrl(playlistInfo!!.url)
 
         val finalPlaylistInfo = if (bookmarkedPlaylist != null) {
-            playlistInfo?.copy(
+            playlistInfo.copy(
                 uid = bookmarkedPlaylist.uid,
                 isPinned = bookmarkedPlaylist.is_pinned != 0L
             )