Update for OpenFL 8

Plus fixes

Author: MSGhero

haxe/ui/backend/AssetsBase.hx

@@ -12,7 +12,7 @@ import haxe.ui.assets.FontInfo;
 import haxe.ui.assets.ImageInfo;
 import haxe.ui.util.ByteConverter;
 import openfl.Assets;
-import openfl.Assets.AssetType;
+import openfl.utils.AssetType;
 
 class AssetsBase {
 

haxe/ui/backend/ComponentBase.hx

@@ -120,6 +120,7 @@ class ComponentBase extends FlxSpriteGroup implements IComponentBase {
 
 		while (indexOffset < members.length) {
 			if (!Std.is(members[indexOffset], Component)) indexOffset++;
+			else break;
 		}
 
 		insert(index + indexOffset, child);

haxe/ui/backend/ScreenBase.hx

@@ -25,7 +25,8 @@ class ScreenBase {
 
 		if (options != null && options.container != null) {
 			var fg:FlxGroup = options.container;
-			fg.memberAdded.remove(FlxUIHelper.readyUI);
+			if (fg.exists) fg.memberAdded.remove(FlxUIHelper.readyUI);
+			else options.container = null; // clean up references to destroyed containers
 		}
 
 		options = tko;

haxe/ui/backend/TextDisplayBase.hx

@@ -51,9 +51,6 @@ class TextDisplayBase {
 
 			if (_textStyle.color != null) tf.color = _textStyle.color;
 
-			if (_textStyle.width != null) tf.fieldWidth = tf.width = _textStyle.width;
-			if (_textStyle.height != null) tf.textField.height = tf.height = _textStyle.height;
-			
 			if (tf.wordWrap != _displayData.wordWrap) tf.wordWrap = _displayData.wordWrap;
 			if (tf.textField.multiline != _displayData.multiline) tf.textField.multiline = _displayData.multiline;