fix keyboard action issue on desktop

com.unity.uiwidgets/Runtime/services/keyboard.cs

         int _client;
 
         TextEditingValue _value;
+        
+        TextInputConfiguration _inputConfiguration;
 
         public void show() {
         }
 
         public void setClient(int client, TextInputConfiguration configuration) {
             _client = client;
+            _inputConfiguration = configuration;
+
+            _inputConfiguration = null;
         }
 
         public bool imeRequired() {
                         }
 
                         if (ch == '\n') {
-                            Timer.create(TimeSpan.Zero, () => { TextInput._performAction(_client, TextInputAction.newline); });
+                            Timer.create(TimeSpan.Zero, () => { TextInput._performAction(_client, 
+                                _inputConfiguration?.inputAction ?? TextInputAction.newline); });
+
                         }
 
                         if (_validateCharacter(ch)) {