TextEdit: Fix timer inside tree warning

scene/gui/text_edit.cpp

@@ -3965,7 +3965,7 @@ void TextEdit::_base_remove_text(int p_from_line, int p_from_column, int p_to_li
 
 void TextEdit::_insert_text(int p_line, int p_char, const String &p_text, int *r_end_line, int *r_end_char) {
 
-	if (!setting_text)
+	if (!setting_text && idle_detect->is_inside_tree())
 		idle_detect->start();
 
 	if (undo_enabled) {
@@ -4019,7 +4019,7 @@ void TextEdit::_insert_text(int p_line, int p_char, const String &p_text, int *r
 
 void TextEdit::_remove_text(int p_from_line, int p_from_column, int p_to_line, int p_to_column) {
 
-	if (!setting_text)
+	if (!setting_text && idle_detect->is_inside_tree())
 		idle_detect->start();
 
 	String text;