Search using ElasticSearch fails with phrase_prefix multiMatchType

[dalyathan]

Describe the bug
Using phrase_prefix in ElasticsearchOptions.searchConfig.multiMatchType in the latest versions of the ElasticSearch plugin (3.1.x) is causing the search query to fail with the error x_content_parse_exception

To Reproduce
Steps to reproduce the behavior:

1. Add the following to your vendure-config.ts

ElasticSearch.init({
  searchConfig:{
       multiMatchType: 'phrase_prefix',
  }
})

2. All search queries should fail with the error x_content_parse_exception

Expected behavior
The search should yield a successful result.

Environment (please complete the following information):

• @vendure/core version: 3.1.1, 3.1.4 and 3.1.7
• Nodejs version 20.8.1
• Database (mysql/postgres etc): sqlite3 v. 5.1.7

Additional context
The error seems to go away when we remove the fuzziness: 'AUTO' that is added in here