Summary:
This diff adds a simple quality of life improvement for the YugabyteDB Anywhere slow queries UI.
Instead of requiring a page reload to trigger a refetch of slow queries for a given universe,
users can click a refresh button instead.

Original commit: D42197 / f8d7d5f8dde00b25478f5aff1a24d9723d02fd48

Test Plan:
Verify the refresh button triggers a refetch for slow queries with the expected params.
{F338969}
{F338970}

Reviewers: rmadhavan, nsingh

Reviewed By: nsingh

Subscribers: nsingh

Differential Revision: https://phorge.dev.yugabyte.com/D42392