Elements block support: Fix link color rendering on site front end

[andrewserong]

Description

Fixes an issue introduced in #35425 where the elements' block support styles render an additional style tag within a style tag, which caused a regression for rendering styles on the front end of a site.

The similar block supports that render styles using wp_footer wrap the styles in a <style> tag, however in this function the styles are already wrapped, so we don't need to add the additional wrapper.

How has this been tested?

Manually with TT1-Blocks theme active.

Add a post and insert a paragraph block. Choose a preset custom color for the link color, and view the post on the front end of the site.

With this PR applied, the color should render correctly.

Screenshots

Front end of the site:

Before	After

View source:

Before	After

Types of changes

Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• I've tested my changes with keyboard and screen readers.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).

[Mamaduka]

Looks good to me 👍 I see the <style> tag on line 41.

[andrewserong]

Thanks for the quick review @Mamaduka!