fix: opensearch script score with filters

[tstadel]

Related Issues

• fixes OpenSearchDocumentStore script score query with filters is invalid #3320

Proposed Changes:

set filter properly according to https://opensearch.org/docs/latest/search-plugins/knn/knn-score-script/

How did you test it?

• ran locally against opensearch
• adjusted unittests

Notes for the reviewer

I thought about adding the filters logic to _get_vector_similarity_query, however this also need refactoring of ElastisearchDocumentStore. Given that there is already a PR for better script_score support underway in #3284 I kept the changes to a minimum.

Checklist

• I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added tests that demonstrate the correct behavior of the change
• I've used the conventional commit convention for my PR title
• I documented my code
• I ran pre-commit hooks and fixed any issue

[vblagoje]

LGTM