The small refresh-circle overlay that appeared in a widget's top-right
corner during a background refetch wasn't adding useful signal and
just added visual noise. Drop the isWidgetRefreshing detection, the
indicator markup/CSS, and the now-dead query-key/runtime-query
plumbing that only existed to power it.
Updated the lazy-widgets e2e test to drop its assertions on the now
-removed [data-widget-refreshing] marker; the behavior it was really
verifying (cached content stays visible during a background refetch,
which completes cleanly) is still covered by the existing network
-level checks in the same test.