Description
In the Elementor V4 editor the Meta Box dynamic tags (meta-box-text, meta-box-image, meta-box-url) are missing from the dynamic tags of atomic widgets (e-heading, e-paragraph, e-image…). They are only available in V3 widgets.
Cause
Elementor builds the list of tags for atomic widgets in Elementor\Modules\AtomicWidgets\DynamicTags\Dynamic_Tags_Editor_Config::get_tags(). For each tag it converts every control with convert_control_to_atomic(), which throws "Control must have name, section, label, and default" when a control lacks one of those keys; a tag with a control that fails is dropped, unless it sets force_convert_to_atomic.
The controls of the Meta Box tags (key, and before, after, fallback) have name, section and default but no label, so the conversion fails and all three tags are dropped. Checked by calling convert_control_to_atomic() on each control of meta-box-text and meta-box-image: every one of them throws that exception.
Version 2.2.8 already handles atomic widgets in group skins (collect_atomic_dynamic_tags()), but the tags cannot be chosen in an atomic widget because of this.
Expected
Giving the controls a label (and checking that the key select, which uses groups, converts to an atomic select) should make the tags available in V4.
Environment
MB Elementor Integrator 2.2.7 (the tag controls are unchanged in 2.2.8), Meta Box 5.15.2, Elementor 4.3.5, Elementor Pro 4.3.2.
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