Dashboard: Migrate contract/events from chakra to tailwind (#7742)

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## PR-Codex overview
This PR refactors the `EventsFeed` component in `events-feed.tsx`, updating its structure and styling while changing the imported UI components to a custom design system. It enhances the user interface and maintains the same functionality.

### Detailed summary
- Replaced Chakra UI components with custom components from the UI library.
- Modified the `EventsFeed` component to use `function` syntax instead of `React.FC`.
- Updated the layout from `Flex` and `SimpleGrid` to `div` with Tailwind CSS classes.
- Changed event selection handling to use `Select` from the custom library.
- Refined the `EventsFeedItem` component structure and styling.
- Updated the way transaction data is displayed with `CopyTextButton`.
- Adjusted the accordion implementation to use custom `Accordion` components.
- Removed unused imports and props for cleaner code.

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Author: MananTank