feat: add tokens to RegionalizationBar

[ArthurTriis1]

What's the purpose of this pull request?

This PR applies the new Theming structure to RegionalizationBar: new scoped tokens linked to global ones.

Additionally, I adjusted the RegionalizationBar's style.

How does it work?

This PR uses local variables to parameterize the RegionalizationBar properties, then connects these scoped tokens to the global ones.

Tokens

Local token	Default value/Global token linked
--fs-regionalization-bar-width	100%

Button

Local token	Default value/Global token linked
--fs-regionalization-bar-button-width	100%
--fs-regionalization-bar-button-padding	var(--fs-spacing-0) var(--fs-spacing-3)
--fs-regionalization-bar-button-color	var(--fs-color-text-display)
--fs-regionalization-bar-button-background-color	var(--fs-color-neutral-0)
--fs-regionalization-bar-button-border	0

Input Message

Local token	Default value/Global token linked
--fs-regionalization-bar-input-message-margin-right	auto
--fs-regionalization-bar-input-message-font-weight	var(--fs-text-weight-regular)

---

Variants

Postal Code setted in SessionProvider

Edit Message

Local token	Default value/Global token linked
--fs-regionalization-bar-edit-message-margin-left	auto
--fs-regionalization-bar-edit-message-text-decoration	underline

Postal Code

Local token	Default value/Global token linked
--fs-regionalization-bar-postal-code-margin-right	auto
--fs-regionalization-bar-postal-code-font-weight	var(--fs-text-weight-regular)

How to test it?

Checklist

• Added an entry in the CHANGELOG.md at the beginning of its due section. The latest version should comes first.
• Added the PR number with the PR link at the entry in the CHANGELOG.md. E.g., New items in the pull_request_template.md (#4)
• Updated the Storybook - if applicable.
• Added a label according to the PR goal - Breaking change, Enhancement, Bug or Chore.
• Added the component, hook, or pathname in-between backticks (``) - If applicable. E.g., ComponentName component.

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[vercel]

Deployment failed with the following error:

Resource is limited - try again in 5 minutes (more than 100, code: "api-deployments-free-per-day").

[vtex-sites]

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