Export Users Connection selector should support text entry (with completion)

Feature: Export Users Connection selector should support text entry (with completion)

Description: Connection selector is a dropdown that only shows the first 100 connections, so it’s not possible to use the dashboard to export users for connections later in the list. Allow text entry with completion over all connection names.

Alternatively provide an export action on each connection’s details page.

Use-case: As a dashboard user in a customer with a large number of enterprise connections, I want to export all users in a database connection.