fix(mfi-ui): actionbox bugs / improvements

[chambaz]

Various minor bug fixes and improvements to action box.

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Name	Status	Preview	Comments	Updated (UTC)
marginfi-v2-trading	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 26, 2024 4:19pm
marginfi-v2-ui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 26, 2024 4:19pm

2 Skipped Deployments

| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **marginfi-landing-page** | ⬜️ Skipped ([Inspect](https://vercel.com/mrgn/marginfi-landing-page/877h2SnY85GHAzNzfiCyBkKg2eEz)) | | | Nov 26, 2024 4:19pm | | **marginfi-v2-docs** | ⬜️ Skipped ([Inspect](https://vercel.com/mrgn/marginfi-v2-docs/t8NFVTMvG9NFSb4tfG51hKDebHz2)) | | | Nov 26, 2024 4:19pm |

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_{Last updated for commit dafe9ff. This comment will update as new commits are pushed.}