feat: redesign share sidebar panel

[AlexAndBear]

Description

Related Issue

• Fixes Redesign share sidebar panel #2078

How Has This Been Tested?

• test environment:
• test case 1:
• test case 2:
• ...

Types of changes

• Bugfix
• Enhancement (a change that doesn't break existing code or deployments)
• Breaking change (a modification that affects current functionality)
• Technical debt (addressing code that needs refactoring or improvements)
• Tests (adding or improving tests)
• Documentation (updates or additions to documentation)
• Maintenance (like dependency updates or tooling adjustments)

[JammingBen]

I'm noticing a few small things:

• The horizontal padding to the sides feels a bit too big. I think it should be 16px in total, just like the files details root panel. It seems to be 24px for the shares.
• The 3-dots-menu next to the "Share" button is missing a hover.
• The "Search" placeholder inside the invite input is jumping on focus.
• The role select ("Can view") beneath the invite input and the "Add link" button now have a visible hover, maybe set no-hover? Because it looks a bit off without any margin.
• Something happened to the paddings of the link and people share menus, they're too big, especially top: