Add auto translate mode for tooltips

[timothyqiu]

Supersedes #97265

This PR adds tooltip_auto_translate_mode to Control. This auto translate mode is applied to the tooltip control, whether the default Label, or custom one returned by _make_custom_tooltip.

Since the tooltip control is a descendant of its owning control, AUTO_TRANSLATE_MODE_INHERIT works as expected.

Rationale:

It's not uncommon for tooltips to show dynamic content. Example in editor codebase (C++):

godot/editor/gui/editor_bottom_panel.cpp

Line 282 in c3e16cd

version_btn->set_tooltip_text(vformat(TTR("Git commit date: %s\nClick to copy the version information."), build_date));

In this kind of usage:

• tooltip text has to be translated manually
• tooltip auto translation should be disabled in order to avoid double translation
• it's not related to whether the control itself should auto translated

---

The second problem this PR solves is the same as described in #97265:

Tooltip text could be pure data instead of text-to-display in order to do customization via _make_custom_tooltip(). Thus, we should not translate them immediately through atr().

[timothyqiu]

I still get translated text in _make_custom_tooltip() though.

How is your scene setup?

I tested with tooltip.zip and it works fine.

[KoBeWi]

Works fine with #97397 (I was testing with Button).

[timothyqiu]

Ah yeah, currently button's shortcut_in_tooltip is implemented by calling the button's atr() directly.

[akien-mga]

Thanks!