This addresses extreme slowness when you have thousands of rules in
potentially hundreds of rule groups. It can still be a bit slow even with
pagination and infinite scroll for very large use cases, but it's much
better already than before.
Fixes https://github.com/prometheus/prometheus/issues/15551
Signed-off-by: Julius Volz <julius.volz@gmail.com>
Without this, the page that is shown first renders once with an empty path
prefix value, since the settings update takes a render cycle to complete.
However, we only fetch certain data from the API exactly once for a given
page, and not for every re-render with changed path prefix value (and we
also wouldn't want to fetch it from the wrong location initially).
This duplicates the served endpoint list once more, but exporting them from
App.tsx would also have been dirty (hot reload only works when a file only
exports one component and nothing else, thus there'd be a linter warning).
Signed-off-by: Julius Volz <julius.volz@gmail.com>
