Revert "Fix "Attach Node Script" inherits popup type"

This reverts commit 227238b4246d335910c364188ce9233fc70ddc65.

This dialog is used to both open and create scripts, so it needs to have
the features of the save dialog.

editor/script_create_dialog.cpp

@@ -307,7 +307,7 @@ void ScriptCreateDialog::_browse_path(bool browse_parent) {
 
 	is_browsing_parent = browse_parent;
 
-	file_browse->set_mode(EditorFileDialog::MODE_OPEN_FILE);
+	file_browse->set_mode(EditorFileDialog::MODE_SAVE_FILE);
 	file_browse->set_disable_overwrite_warning(true);
 	file_browse->clear_filters();
 	List<String> extensions;