Pouchdb: Nested $or not working in pouchdb-find

[DiamondYuan]

{
  "$and": [
    {
      "$or": [
        {
          "female": {
            "$size": 0
          }
        },
        {
          "female": {
            "$exists": false
          }
        }
      ]
    },
    {
      "$or": [
        {
          "male": {
            "$size": 0
          }
        },
        {
          "male": {
            "$exists": false
          }
        }
      ]
    }
  ]
}

But result is

```
{
id: '00577033-4ba8-49f2-9de8-e8c5a1f52c75',
female: [ '030026c4-1284-4c70-8cc3-61f05027f77c' ],
male: [],
}

[DiamondYuan]

use massageSelector

console.log(
  JSON.stringify(
    massageSelector({
      $and: [
        {
          $or: [
            {
              female: {
                $size: 0,
              },
            },
            {
              female: {
                $exists: false,
              },
            },
          ],
        },
        {
          $or: [
            {
              male: {
                $size: 0,
              },
            },
            {
              male: {
                $exists: false,
              },
            },
          ],
        },
      ],
    })
  )
);

{"$or":[{"male":{"$size":0}},{"male":{"$exists":false}}]}

[DiamondYuan]

same to https://github.com/pouchdb/pouchdb/issues/6879

[DiamondYuan]

@nolanlawson @willholley

[stale[bot]]

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