Component subfield labels are duplicated when label display set to above

Problem/Motivation

When a component subfield of a Name element (e.g., Given, Family, Middle, etc.) has its
Label display setting set to title (aka above), the output contains nested <label> elements.

This happens because the Name module pre-renders a themed label and assigns the resulting HTML to #title; Drupal then renders another label for #title, resulting in two labels:

<label for="edit-field-mynamefield-0-given" class="form-item__label">
  <label class="form-item__label">Given</label>
</label>

Steps to reproduce

1. Add a Name field to a content type (or any entity with a form display).
2. In the field settings, set a component subfield (e.g., Given) Label display to above.
3. Open the add/edit form and inspect the markup of that subfield.

Expected: One label per input, rendered by core per #title_display = 'before'.

Actual: Two labels (a label nested inside another label).

Proposed resolution

• Do not pre-render and inject a themed label into #title for the “title” (above) option.
• Instead, let Form API/Core render the label:
  • Set $element['#title_display'] = 'before' .
  • Set $element['#required'] = $show_component_required_marker to control the HTML5 required/aria-required behavior, consistent with other branches.
• Keep existing behavior for other title_display modes (description/placeholder/none/attribute).

Remaining tasks

• Implement the change for the title case.
• Add test coverage to assert there is exactly one label.

User interface changes

• DOM fix: subfield labels no longer duplicated and nested when “above” is selected.