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c7ea6e9f - Issue 8081 Fix query results size bug. Other bug: pass vector_field param. (#8085)

Issue 8081 Fix query results size bug. Other bug: pass vector_field param. (#8085) @baskaryan #8081 Likely the reason why the issue occurred is that OpenSearch's default k is 10, so it needs to be specified. Here's a similar question about its cousin ElasticSearch https://discuss.elastic.co/t/elasticsearch-returns-only-10-records-but-the-hit-is-507/136605 I tested this manually and also fixed the same issue in `_default_painless_scripting_query`. In addition, `_default_painless_scripting_query` was not passing the `vector_field` name to a sub call, so I fixed that too.  I also tested this in the aws opensearch developer tools.  --------- Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>