Add wallet connect button loading label state

[Chucks1093]

Summary
Add wallet connect button loading label state

Scope

• add explicit loading label/state for wallet connect button\n- ensure loading state is announced for accessibility\n- keep existing connection logic unchanged

Acceptance Criteria

• scoped change is implemented with no unrelated file churn
• docs/tests are updated where applicable
• contributor can validate the outcome locally

Contributor coordination: if you pick this up, reach out in Telegram for updates or clarification: https://t.me/accesslayerorg

[K1NGD4VID]

@K1NGD4VID has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hi

Please assign me this task. I’ll add an explicit loading label/state to the wallet connect button with proper accessibility announcements while preserving the existing connection logic and keeping changes scoped to the UI state layer.

ETA: 1–2 hours

ℹ️ Repo Maintainers: To accept this application, review their application or assign @K1NGD4VID to this issue.

[drips-wave]

Congratulations, @K1NGD4VID! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

🧑‍💻 @K1NGD4VID: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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🌊 Happy Wave 🌊

[drips-wave]

This issue has been marked as completed by a Drips Wave moderator for @K1NGD4VID as part of the Stellar Wave Program's 4th Wave 🥳

Moderator's reason: [Auto-assessed] The PR has been open for over 34 hours without any maintainer objections, exceeding the 24-hour review window. The code changes directly address the issue by implementing a loading state with accessibility features (aria-live, sr-only) and a spinner for the wallet connect button.

😎 @K1NGD4VID: You earned 100 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.

ℹ️ Note: This issue was marked complete via moderation. Points were issued even though the GitHub issue remains open.