import AppKit


class RecentsCellView: NSTableCellView {
  @IBOutlet weak var downloadDateTextField: NSTextField!
  @IBOutlet weak var downloadAgainButton: NSButton!
  
  override func awakeFromNib() {
    super.awakeFromNib()
    
    if #available(OSX 11.0, *) {
      downloadAgainButton.image = NSImage(
        systemSymbolName: "arrow.clockwise.circle.fill",
        accessibilityDescription: nil
      )?.withSymbolConfiguration(.init(scale: .large))
    }
  }
}

import AppKit


class RecentsCellView: NSTableCellView {
  @IBOutlet weak var downloadDateTextField: NSTextField!
  @IBOutlet weak var downloadAgainButton: NSButton!
}

--- 
+++ 
@@ -4,4 +4,15 @@
 class RecentsCellView: NSTableCellView {
   @IBOutlet weak var downloadDateTextField: NSTextField!
   @IBOutlet weak var downloadAgainButton: NSButton!
+  
+  override func awakeFromNib() {
+    super.awakeFromNib()
+    
+    if #available(OSX 11.0, *) {
+      downloadAgainButton.image = NSImage(
+        systemSymbolName: "arrow.clockwise.circle.fill",
+        accessibilityDescription: nil
+      )?.withSymbolConfiguration(.init(scale: .large))
+    }
+  }
 }
Use SF Symbols for recents cell button, make it a bit larger
