To Reproduce
Steps to reproduce the behavior:

1. Go to http://194.233.167.225:4350/graphql
2. Paste the query:

{
  channels(where: {
    id_in: ["1", "2", "3"],
    OR: [
      { title_contains: "test" },
      { description_contains: "test"  }
    ]
  }) {
    id
  }
}

3. Hit the "Execute" button
4. Notice results including channels other than 1, 2 and 3

Expected behavior
The OR condition is joined with other conditions using the default operator (AND)

Expected difference in SQL:

SELECT "channel"."id" AS _c0 FROM "channel" AS "channel"
-  WHERE (("channel"."id" IN ($1, $2, $3)) OR (position($4 in "channel"."title") > 0) OR (position($5 in "channel"."description") > 0))
+  WHERE (("channel"."id" IN ($1, $2, $3)) AND ((position($4 in "channel"."title") > 0) OR (position($5 in "channel"."description") > 0)))

Environment (please complete the following information):

• @subsquid/graphql-server: 3.2.3