[C-4988] Update mobile TrackScreen layout for remixes + comments

[sliptype]

Description

NOTE: I didn't put this behind a feature flag because it's semi unrelated to comments. So this change will go live with next release

• Show remix lineup on trackscreen when relevant
• Delete TrackScreenRemixes
• Refactor TrackScreen to use a top level VirtualizedScrollView instead of pushing everything into a single Lineup header
• Delete TrackScreenMainContent, not really necessary anymore
• Show cosign icon on lineup tiles and fix styling
• Add itemsStyles to override padding of lineup items. We should think about removing the outer padding and delegating to the parent component

Screen.Recording.2024-09-05.at.4.57.52.PM.mov

How Has This Been Tested?

Tested:

• Tracks without remixes
• Tracks with remixes
• Comments feature on/off
• Tracks with a remix parent
• Cosign in lineup and on track screen

Need to test:

• Android

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[dylanjeffers]

great improvement, ui loooks much much nicer

[dylanjeffers]

i think best to do [styles.item, itemStyles]

[dylanjeffers]

do we want to do this all unconditionally in trackScreen? i wonder if moving these into a Remixes block might be best?

[dylanjeffers]

all good if you dont want to do a massive refactor rn though.