Show individual error messages for failed items in BatchPayQueue

[Kingsman-99]

Description

When one or more payments in a batch fail, BatchPayQueue marks items with a generic error icon but shows no message explaining the failure. Displaying the specific error (e.g. "Insufficient balance", "Invalid address") per item helps users fix and retry only the affected payments.

Acceptance Criteria

• Failed queue items display the error message string below the recipient row
• The error message is truncated to 120 characters with a "Show more" toggle for long messages
• Successfully paid items show a green checkmark with "Paid" label
• Existing tests continue to pass

Context

• Target file: src/components/BatchPayQueue.tsx

[Muhd010]

@Muhd010 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi maintainer, I’ve reviewed the issue details and am confident I can deliver a clean, efficient solution. Please assign it to me!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Muhd010 to this issue.

[elvissamuel834-dotcom]

@elvissamuel834-dotcom has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi Maintainer Can I resolve this kindly assign

ℹ️ Repo Maintainers: To accept this application, review their application or assign @elvissamuel834-dotcom to this issue.

[drips-wave]

Congratulations, @elvissamuel834-dotcom! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @elvissamuel834-dotcom: 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

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Third Campaign campaign!

@elvissamuel834-dotcom's PR #639 was approved and merged by @Kingsman-99.

🏆 @elvissamuel834-dotcom: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (468 total points). Track your full progress on GrantFox.

👏 Great work, @elvissamuel834-dotcom! Keep contributing to Stellar-split.

[drips-wave]

This issue has been completed by @elvissamuel834-dotcom as part of the Stellar Wave Program's 8th Wave 🥳

😎 @elvissamuel834-dotcom: You earned 200 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. You can also Leave a review to share your experience working on this issue.

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