Remove localized from custom_hero_guts template

[dlopezvsr]

Description

This PR removes .localized from custom_hero_guts.html template, reducing the number of .localized attributes in the codebase, and still keeping the entry in self.breadcrumb_list translated and displayed properly.

How to test

• Pull and checkout this branch into your local env, and start app.
• Go to the CMS > open a publication page that contains Article pages where the breadcrumb can be shown once the article is opened.
• Open the Article page and change the locale slug from "en" to any other locale available.
• Make sure the breadcrumb description is still displayed properly and translated accordingly.

Caveats:

In case there is not any current translation, the parent page url name will remain the same. So you can go to the CMS and add the translation to test.

Link to sample test page: https://foundation-s-tp1-101-re-3vx1kx.herokuapp.com/en/
Related PRs/issues: #10008

Checklist

Tests

• Is the code I'm adding covered by tests?

Changes in Models:

• Did I update or add new fake data?
• Did I squash my migration?
• Are my changes backward-compatible. If not, did I schedule a deploy with the rest of the team?

Documentation:

• Is my code documented?
• Did I update the READMEs or wagtail documentation?

Merge Method
💡❗Remember to use squash merge when merging non-feature branches into main

[mmmavis]

Looks good to me. Thanks @dlopezvsr !