Describe the bug

When searching in enabled, the onChange callback passed in the the search prop only fires for the default searchFormat, which is eql.

This makes it impossible to use custom search logic combined with plain text.

Impact and severity

It's blocking fixing a bug in Kibana: https://github.com/elastic/observability-dev/issues/4787

To Reproduce

It's easy to see in the source code, the search.onChange callback not being called for the plain text method:

whereas it's called for the default format (in the method above), as expected.

Expected behavior

The onChange to also fire with searchFormat="text".