Adding animation for all dropdown

Merged username-removed-535087 requested to merge 26208-animate-drodowns into master

What does this MR do?

This MR is adding slide in/out with faded animation effect for all Dropdown

Why was this MR needed?

See #26208 (closed)

Does this MR meet the acceptance criteria?

What are the relevant issue numbers?

closes #26208 (closed)