[Major] Removed Material UI dependencies from Dropdown

[GomezIvann]

Summary of behaviour changes of the component regarding the original:

1. New box-shadow to match other components with a list of Halstack.
2. Dropdown menu has been reimplemented as a Portal using Radix UI Popover, similar to how it was done with the select.
3. Accessibility roles and attributes are preserved as much as possible, adding new ones following W3C guidelines for the active descendant pattern.
4. Menu transitions for opening and closing have been removed.
5. Keyboard Support has been preserved, adding new ones such as Esc, Home, PageUp, End, PageDown, etc. For this, I've followed W3C accessibility guidelines for Menu Buttons (Dropdown pattern).
6. Storybooks and Jest tests have been rewritten and incremented to match the new implementation and catch possible future errors.

[marcialfps]

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