fix underline for links

SessionUIKit/Components/AttributedText.swift

@@ -5,6 +5,7 @@ struct AttributedTextBlock {
     let content: String
     let font: Font?
     let color: Color?
+    let underlineColor: Color?
 }
 
 public struct AttributedText: View {
@@ -24,9 +25,15 @@ public struct AttributedText: View {
                 let substring = (text.string as NSString).substring(with: range)
                 let font =  (attribute[.font] as? UIFont).map { Font($0) }
                 let color = (attribute[.foregroundColor] as? UIColor).map { Color($0) }
-                descriptions.append(AttributedTextBlock(content: substring,
-                                                        font: font,
-                                                        color: color))
+                let underlineColor = (attribute[.underlineColor] as? UIColor).map { Color($0) }
+                descriptions.append(
+                    AttributedTextBlock(
+                        content: substring,
+                        font: font,
+                        color: color,
+                        underlineColor: underlineColor
+                    )
+                )
             })
         }
     }
@@ -36,6 +43,7 @@ public struct AttributedText: View {
             var text: Text = Text(description.content)
             if let font: Font = description.font { text = text.font(font) }
             if let color: Color = description.color { text = text.foregroundColor(color) }
+            if let underlineColor = description.underlineColor { text = text.underline(color: underlineColor) }
             return text
         }.reduce(Text("")) { (result, text) in
             result + text