Revert "Updated LineEdit to address #41278"

This reverts commit 71febfd6e2f6187fcc106ce715124cf173bfa0b8.

scene/gui/line_edit.cpp

@@ -1281,12 +1281,7 @@ void LineEdit::delete_text(int p_from_column, int p_to_column) {
 
 void LineEdit::set_text(String p_text) {
 	clear_internal();
-
-	if (p_text.length() > max_length) {
-		append_at_cursor(p_text.substr(0, max_length));
-	} else {
-		append_at_cursor(p_text);
-	}
+	append_at_cursor(p_text);
 
 	if (expand_to_text_length) {
 		minimum_size_changed();