Fix doubled padding on recycled iOS labels

[Copilot]

Recycled NLabel instances on iOS could render with accumulated padding because the native draw path applied insets more than once. This change keeps padding sourced from textContainerInset only, so reused cells preserve the expected spacing.

• Root cause

  • NLabel.drawText(in:) applied:
    • textContainerInset
    • padding
    • borderThickness
  • The iOS TypeScript layer already computes textContainerInset from effective padding and border widths, so the native UILabel path could double-apply the same spacing on reused views.

• Change

  • Simplified the NLabel draw path to inset only by textContainerInset.
  • Left sizing behavior intact in textRect(forBounds:) and intrinsicContentSize, which still account for padding as before.

• Effect

  • Prevents padding growth across recycled views such as CollectionView cells.
  • Aligns the UILabel render path with the existing inset computation performed in index.ios.ts.

override func drawText(in rect: CGRect) {
  super.drawText(in: rect.inset(by: self.textContainerInset))
}

• Fixes Padding is applied doubled on RecyclerViews (like CollectionView) #29