Not possible to fetch Elasticsearch result for more then 10000

[DanielSiepmann]

Core: Exception handler (WEB): Uncaught TYPO3 Exception: Result window is too large, from + size must be less than or equal to: [10000] but was [14860]. See the scroll api for a more efficient way to request large data sets. This limit can be set by changing the [index.max_result_window] index level setting. [reason: all shards failed] | Elastica\Exception\ResponseException thrown in file vendor/ruflin/elastica/lib/Elastica/Transport/Http.php in line 172```

We should check whether updating Elastica will fix this because of the use of scroll api. Otherwise we might change the implementation to use the API.