[WS-2236] Upgrade Account Promotional Banner to Production‑Ready Version

[LukasFrm]

Resolves JIRA: https://bbc.atlassian.net/browse/WS-2236

Summary

Account Promotional Banner component is now aligned with UX and accessibility standards and is safe to be released to production for Hindi locale.

Code changes

• Updated AccountPromotionalBanner CTA styling: fixed sizes/padding, white visited text, register as underlined white link, added account icon styles.
• Updated AccountPromotionalBanner markup: replaced chevrons with AccountIcon for sign-in and removed chevron from register.
• Updated PromotionalBanner responsive spacing: bottom padding becomes TRIPLE at GROUP_1_MIN_WIDTH.
• Updated AccountIcon SVG: new viewBox/size and new path to match updated design.

Testing

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[elvinasv]

Let's also update the copy so it reflects correct fonts/widths used

https://www.figma.com/design/L9y0TIrdCn9dkonEj4yry2/WS-Sign-in--promotional-banner?node-id=26-2349&t=4YojeTSpuYFTZhcJ-0

[Copilot]

Pull request overview

Updates the World Service Account promotional banner and shared account icon to match updated UX styling/markup and adjust the PromotionalBanner layout for responsive spacing.

Changes:

• Tweaks PromotionalBanner content padding so bottom padding increases at GROUP_1_MIN_WIDTH.
• Updates AccountPromotionalBanner CTA markup to replace chevrons with an AccountIcon for sign-in and remove the register chevron.
• Updates CTA styling (sizes/padding/visited styles) and refreshes the AccountIcon SVG path/viewBox.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
src/app/components/PromotionalBanner/index.styles.ts	Adjusts responsive bottom padding at GROUP_1_MIN_WIDTH.
src/app/components/icons/index.tsx	Updates AccountIcon SVG sizing and path to new design.
src/app/components/Account/AccountPromotionalBanner/index.tsx	Updates CTA markup to use AccountIcon and removes chevrons.
src/app/components/Account/AccountPromotionalBanner/index.styles.tsx	Updates CTA and icon styling (fixed sizing, visited color overrides, underline styling).