Prevent TextField.tintColor being overridden

Sources/iOS/Text/TextField.swift

@@ -205,6 +205,8 @@ open class TextField: UITextField, Themeable {
   @IBInspectable
   open var placeholderActiveColor = Color.blue.base {
     didSet {
+      /// Keep tintColor update here. See #1229
+      tintColor = placeholderActiveColor
       updatePlaceholderLabelColor()
     }
   }
@@ -533,7 +535,6 @@ fileprivate extension TextField {
   
   /// Updates the placeholderLabel text color.
   func updatePlaceholderLabelColor() {
-    tintColor = placeholderActiveColor
     placeholderLabel.textColor = isEditing ? placeholderActiveColor : placeholderNormalColor
   }