[S4] Refresh pool raised amount after successful donation

[Akshola00]

Description

After a donation succeeds, update the pool detail page to show the new raised amount without a full page reload.

Deliverables

• After DonateModal reports success, call fetchPool(poolId) to refresh pool data
• Pool's progress bar and raised amount update to reflect the new donation
• npm run build passes

Notes

Depends on #96 (DonateModal error state) and #75 (fetchPool action).

[teethaking]

@teethaking has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

hello maintainer may i work on this issue?
ill submit PR within 1-3 days

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[chinpiang]

@chinpiang has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

hi, can i work on this

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[drips-wave]

Congratulations, @chinpiang! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @chinpiang: 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.

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[drips-wave]

This issue has been completed by @chinpiang as part of the Stellar Wave Program's 6th Wave 🥳

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