Update `ProgressiveSearch` to cancel requests if facet/search state changes

[camdendotlol]

On Pan African Data, we noticed an issue where newly fetched pages would populate in the results even if the user had selected a facet that should filter them out while they were loading.

It seems like there's some code (hasStateChange) that checks for either this situation or something similar:

react-components/packages/core-data/src/hooks/ProgressiveSearch.js

Line 87 in e69e842

if (isFirstPage && hasStateChanged(results._state, lastSearchState.current, true)) {

But it does not seem to be handling the case above. Ideally, the fetch request should be canceled, but if that's too tricky we should at least not append the newly loaded results to the list if they don't match the current facets.