Minor layout fixes

Backports/ListRowSeparator+Backport.swift

@@ -0,0 +1,12 @@
+import Foundation
+import SwiftUI
+
+extension Backport where Content: View {
+    @ViewBuilder func listRowSeparator(_ visible: Bool) -> some View {
+        if #available(iOS 15, macOS 12, tvOS 15, *) {
+            content.listRowSeparator(visible ? .visible : .hidden)
+        } else {
+            content
+        }
+    }
+}