fix(ad-hoc): markdown nested lists (#124)

* Fix nested list item head indentation
* Opt out of lists system formatting logic on iOS 16

Sources/ProcessOut/Sources/UI/Shared/DesignSystem/Typography/AttributedStringBuilder.swift

@@ -35,9 +35,6 @@ struct AttributedStringBuilder {
  /// Allows to alter font with the specified symbolic traits.
  var fontSymbolicTraits: UIFontDescriptor.SymbolicTraits = []
 
- /// The text lists that contain text.
- var textLists: [NSTextList] = []
-
  /// The text tab objects that represent the paragraph’s tab stops.
  var tabStops: [NSTextTab] = []
 
@@ -83,7 +80,6 @@ struct AttributedStringBuilder {
  paragraphStyle.paragraphSpacing = typography.paragraphSpacing
  paragraphStyle.alignment = alignment
  paragraphStyle.lineBreakMode = lineBreakMode
- paragraphStyle.textLists = textLists
  paragraphStyle.tabStops = tabStops
  paragraphStyle.headIndent = headIndent
  attributes[.paragraphStyle] = paragraphStyle

Sources/ProcessOut/Sources/UI/Shared/DesignSystem/Typography/AttributedStringMarkdownVisitor.swift

@@ -36,10 +36,9 @@ final class AttributedStringMarkdownVisitor: MarkdownVisitor {
  func visit(list: MarkdownList) -> NSAttributedString {
  var builder = self.builder
  let textList = textList(list)
- builder.textLists.append(textList)
  builder.tabStops += listTabStops(textList, itemsCount: list.children.count)
  if let tabStop = builder.tabStops.last {
- builder.headIndent += tabStop.location
+ builder.headIndent = tabStop.location
  }
  let itemsSeparator = NSAttributedString(string: Constants.paragraphSeparator)
  let attributedString = list.children