move getChildren to didMoveToWindow

modules/expo-selectable-text/ios/ExpoUITextView.swift

@@ -49,7 +49,6 @@ class ExpoUITextView: ExpoView {
   override func insertReactSubview(_ subview: UIView!, at atIndex: Int) {
     if subview.isKind(of: ExpoUITextViewChild.self) {
       insertSubview(subview, at: atIndex)
-      self.getTextChildren()
     }
   }
 
@@ -64,6 +63,10 @@ class ExpoUITextView: ExpoView {
     return subviews
   }
 
+  override func didMoveToWindow() {
+    self.getTextChildren()
+  }
+
   override func layoutSubviews() {
     // Get the width from the bounds
     let maxWidth = bounds.width