dashboard: Add E2E tests for CSV batch disbursement upload and validation modal

[ONEONUORA]

Description

Automate uploading sample CSV file and asserting recipient row count.

Files to Edit/Create

• dashboard/playwright.config.ts

Acceptance Criteria

• Simulate file input change with fixture file and assert preview grid appears.

Guidance / Hints

Use page.setInputFiles().

[Hasmong]

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

Hello, I believe this issue is a good fit for my expertise, and I'm confident I can get it resolved properly. I'd appreciate being assigned to it.

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[benedict-cmd]

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

Hey I am a developer please assign me to this issue and I'll deliver more than expected

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[basseyanam03-dev]

@basseyanam03-dev has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi, I’d like to work on this issue. I’ve reviewed the requirements and understand what needs to be implemented. I’ll first inspect the existing code, make the necessary changes, add or update tests where appropriate, and submit a clean, well-documented PR. I’m ready to start immediately.

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[EmeditWeb]

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

Hi Maintainer, I'd love to fix this issue

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[Olajcodes]

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

Hi maintainer! I would love to help you with this issue. Given my theoretical knowledge and background, I am quite sure that I am well-equipped to tackle it. Please kindly assign it to me

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[israeloluwasegun293-stars]

@israeloluwasegun293-stars has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello, maintainer,
Please, can i get this assigned? i can handle it perfectly. Thanks

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[Anadudev]

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

I would like to work on this issue.

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