feat: samples UI fix

Author: srcnalt

Samples~/ChatGPT/ChatGPT Sample.unity

@@ -668,7 +668,7 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   inputField: {fileID: 1079664277}
   button: {fileID: 1920761190}
-  context: {fileID: 1216428644}
+  scroll: {fileID: 356682880}
   sent: {fileID: 8660877164928630359, guid: 53cd26a6eefa5a74086203cd118a04d3, type: 3}
   received: {fileID: 961534450149497043, guid: adc0146c2853ed1418133faaf4379eb1, type: 3}
 --- !u!4 &499436300
@@ -879,7 +879,7 @@ MonoBehaviour:
   m_ScaleFactor: 1
   m_ReferenceResolution: {x: 1024, y: 768}
   m_ScreenMatchMode: 0
-  m_MatchWidthOrHeight: 1
+  m_MatchWidthOrHeight: 0
   m_PhysicalUnit: 3
   m_FallbackScreenDPI: 96
   m_DefaultSpriteDPI: 96

Samples~/ChatGPT/ChatGPT.cs

@@ -1,16 +1,14 @@
-using System.Linq;
 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections.Generic;
-using System.Threading.Tasks;
 
 namespace OpenAI
 {
     public class ChatGPT : MonoBehaviour
     {
         [SerializeField] private InputField inputField;
         [SerializeField] private Button button;
-        [SerializeField] private RectTransform context;
+        [SerializeField] private ScrollRect scroll;
 
         [SerializeField] private RectTransform sent;
         [SerializeField] private RectTransform received;
@@ -26,18 +24,17 @@ private void Start()
             button.onClick.AddListener(SendReply);
         }
 
-        private async void AppendMessage(ChatMessage message)
+        private void AppendMessage(ChatMessage message)
         {
-            context.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, 0);
+            scroll.content.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, 0);
 
-            var item = Instantiate(message.Role == "user" ? sent : received, context);
+            var item = Instantiate(message.Role == "user" ? sent : received, scroll.content);
             item.GetChild(0).GetChild(0).GetComponent<Text>().text = message.Content;
             item.anchoredPosition = new Vector2(0, -height);
-
-            await Task.Delay(200);
-
+            LayoutRebuilder.ForceRebuildLayoutImmediate(item);
             height += item.sizeDelta.y;
-            context.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, height);
+            scroll.content.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, height);
+            scroll.verticalNormalizedPosition = 0;
         }
 
         private async void SendReply()
@@ -55,6 +52,7 @@ private async void SendReply()
             messages.Add(newMessage);
 
             button.enabled = false;
+            inputField.text = "";
             inputField.enabled = false;
 
             // Complete the instruction

Samples~/Text Completion Chat/TextCompletionChat Sample.unity

@@ -482,7 +482,7 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   inputField: {fileID: 1110244728}
   button: {fileID: 56740866}
-  context: {fileID: 751059434}
+  scroll: {fileID: 1210104932}
   sent: {fileID: 8660877164928630359, guid: f1ce5484a49526e478c032bcc83af3af, type: 3}
   received: {fileID: 961534450149497043, guid: 26e2f7dec8c0be04faf44df827e6dcbd, type: 3}
 --- !u!4 &499436300
@@ -1226,7 +1226,7 @@ MonoBehaviour:
   m_ScaleFactor: 1
   m_ReferenceResolution: {x: 1024, y: 768}
   m_ScreenMatchMode: 0
-  m_MatchWidthOrHeight: 1
+  m_MatchWidthOrHeight: 0
   m_PhysicalUnit: 3
   m_FallbackScreenDPI: 96
   m_DefaultSpriteDPI: 96

Samples~/Text Completion Chat/TextCompletionChat.cs

@@ -1,6 +1,5 @@
 using UnityEngine;
 using UnityEngine.UI;
-using System.Threading.Tasks;
 using System.Collections.Generic;
 
 namespace OpenAI
@@ -9,17 +8,16 @@ public class TextCompletionChat : MonoBehaviour
     {
         [SerializeField] private InputField inputField;
         [SerializeField] private Button button;
-        [SerializeField] private RectTransform context;
+        [SerializeField] private ScrollRect scroll;
 
         [SerializeField] private RectTransform sent;
         [SerializeField] private RectTransform received;
 
         private float height;
         private OpenAIApi openai = new OpenAIApi();
 
-        private List<ChatMessage> messages = new List<ChatMessage>();
-        private string prompt = "Act as a random stranger in a chat room and reply to the questions.\nQ: ";
         private string userInput;
+        private string prompt = "Act as a random stranger in a chat room and reply to the questions.\nQ: ";
 
         private void Start()
         {
@@ -28,14 +26,15 @@ private void Start()
 
         private void AppendMessage(string message, bool isUser = true)
         {
-            context.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, 0);
+            scroll.content.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, 0);
 
-            var item = Instantiate(isUser ? sent : received, context);
-            LayoutRebuilder.ForceRebuildLayoutImmediate(item);
+            var item = Instantiate(isUser ? sent : received, scroll.content);
             item.GetChild(0).GetChild(0).GetComponent<Text>().text = message;
             item.anchoredPosition = new Vector2(0, -height);
+            LayoutRebuilder.ForceRebuildLayoutImmediate(item);
             height += item.sizeDelta.y;
-            context.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, height);
+            scroll.content.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, height);
+            scroll.verticalNormalizedPosition = 0;
         }
 
         private async void SendReply()