Set auto translate mode for drag previews

- Controls
  - `LineEdit`, `TextEdit`: Always disabled since it's dragging user input.
  - `TabBar`: Use the same auto translate mode as the node.
  - `RichTextLabel`: Always disable since auto translation is done
    differently from other controls (selection text you get
    programmatically is always after auto translation).
- Editor
  - Disable drag preview auto translation if the text is user input,
    filename, or class name.
  - Also disabled unexpected auto translation for audio bus effect names.

editor/export/project_export.cpp

@@ -713,6 +713,7 @@ Variant ProjectExportDialog::get_drag_data_fw(const Point2 &p_point, Control *p_
 			drag->add_child(tr);
 			Label *label = memnew(Label);
 			label->set_text(presets->get_item_text(pos));
+			label->set_auto_translate_mode(AUTO_TRANSLATE_MODE_DISABLED); // Don't translate user input.
 			drag->add_child(label);
 
 			presets->set_drag_preview(drag);