Add platform-specific dialogs for LastFM tracks not on device

[Copilot]

When users click on LastFM tracks not present in their local library, the app attempted navigation that would fail. Both platforms now show track information in native dialogs instead.

Changes

WinUI

• LastFmTrackInfoDialog: ContentDialog displaying cover art, metadata, loved/playing status, and global statistics
• LastFmPage: Check IsOnPresentDevice before navigation, show dialog for non-local tracks
• Removed IsEnabled binding from track buttons (was preventing clicks on non-local tracks)

Android

• LastFmTrackInfoBottomSheet: BottomSheet with Material Design cards for track info and statistics
• LastFmInfoFragment: Click handler checks track availability, shows bottom sheet accordingly
• Optimized RecyclerView: click handler set once in OnCreateViewHolder instead of rebinding in OnBindViewHolder

Error Handling

• WinUI: URI validation before BitmapImage creation
• Android: Use Context instead of fragment reference for Glide to prevent memory leaks

// WinUI: Dialog shown for non-local tracks
private async void SongTitle_Click(object sender, RoutedEventArgs e)
{
    var track = (sender as Button)?.DataContext as Track;
    
    if (track?.IsOnPresentDevice == false)
    {
        var dialog = new LastFmTrackInfoDialog { XamlRoot = this.XamlRoot };
        dialog.SetTrackInfo(track);
        await dialog.ShowAsync();
        return;
    }
    
    // Navigate to song detail for local tracks
    // ...
}

// Android: BottomSheet for all tracks (navigation TODO for local tracks)
private void OnTrackClicked(Track track)
{
    var bottomSheet = new LastFmTrackInfoBottomSheet(track);
    bottomSheet.Show(ChildFragmentManager, "LastFmTrackInfo");
}

Both implementations display: cover art, title/artist/album, loved status, now playing status, listeners count, total scrobbles, and local availability status.

Original prompt

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This section details on the original issue you should resolve

<issue_title>last fm page is set on winui but very much lagging behin Droid version</issue_title>
<issue_description>I should make them equal by now, since winui has a pivot with loved tracks, recent tracks, top tracks etc, and a track could be known if present on device or no, and user can can click on title to navigate to said song's page.

I'm thinking that if say the song is not on device, whenuser clicks the app should instead show a content dialog (in winui) or a bottom sheet dialog on droid that will load the info from LastFM only, being; img, title, artists, album, listener state, is user loved, is playing now. i.e a lastfm view of track in dimmer, avoiding external nav.
each platform will have its own unique ui, and I'll probably reuse the ui code so a singleton xaml for windows or droid fragmeent should be best considered!</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes last fm page is set on winui but very much lagging behin Droid version #332

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