batches: center connection summary and show more button
Created by: courier-new
Closes https://github.com/sourcegraph/sourcegraph/issues/37118.
I wonder if the default changed at some point... Anyway, now we'll be explicit that we always want the connection summary and "show more" buttons to be centered in filtered connection UIs.
Test plan
Manually verified a couple instances. Most of covered by Storybook and Chromatic.
App preview:
Check out the client app preview documentation to learn more.