Searches return `400` error response on Hugo site

Searches with multiple words are returning an error:

{
    "error": {
        "root_cause": [
            {
                "type": "query_shard_exception",
                "reason": "failed to create query: field:[body_content] was indexed without position data; cannot run PhraseQuery",
                "index_uuid": "esEuq_8oSjm4FKg7ezu9UA",
                "index": "search-gitlab-docs-hugo"
            }
        ],
        "type": "search_phase_execution_exception",
        "reason": "all shards failed",
        "phase": "query",
        "grouped": true,
        "failed_shards": [
            {
                "shard": 0,
                "index": "search-gitlab-docs-hugo",
                "node": "dDvKR3I8QKauXifxuJgFrw",
                "reason": {
                    "type": "query_shard_exception",
                    "reason": "failed to create query: field:[body_content] was indexed without position data; cannot run PhraseQuery",
                    "index_uuid": "esEuq_8oSjm4FKg7ezu9UA",
                    "index": "search-gitlab-docs-hugo",
                    "caused_by": {
                        "type": "illegal_state_exception",
                        "reason": "field:[body_content] was indexed without position data; cannot run PhraseQuery"
                    }
                }
            }
        ]
    },
    "status": 400
}

Recent MRs with potential impact to search:

• !228 (merged)
• !230 (merged)