fix(/prob-revshare): make table accessible

[kjmitchelljr]

Resolves #193 by adding suggested accessibility features for the Revenue Share Generator Table having tested the following items

• Screen readers can navigate and understand the data structure
• All input fields have proper accessible names
• Column headers are associated with their data
• Validation errors are announced to screen readers
• Keyboard navigation works smoothly
• Component maintains responsive design

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	publisher-tools	403b3a9	Commit Preview URL	Aug 11 2025, 05:40 PM

[adrianboros]

@kjmitchelljr besides VoiceOver use this accessibility tool to find and fix other accessibility related issues for all pages:
see this PR report:
https://wave.webaim.org/report#/https://7f76198d-publisher-tools.webmonetization.workers.dev/tools/

[DarianM]

@kjmitchelljr besides VoiceOver use this accessibility tool to find and fix other accessibility related issues for all pages: see this PR report: https://wave.webaim.org/report#/https://7f76198d-publisher-tools.webmonetization.workers.dev/tools/

@adrianboros @kjmitchelljr @sidvishnoi We can take one route at a time, most accessibility issues are due to low contrast, which should be resolved at the global level. The /rev-share route looks good in my book and in Lighthouse accessibility.

[kjmitchelljr]

Thanks for the input guys, will look into making some of these changes/updates!

[kjmitchelljr]

@sidvishnoi @DarianM is this good to be merged?