Jest incompatability with `structuredClone` causing schema missmatches in tests

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Issue Description

Since structuredClone was introduced in parse-server@8.6.44 jest test fail from field schema validation due to a known issue with jest globals differing from node globals and not handling instanceof correctly -> https://github.com/jestjs/jest/issues/2549.

Workaround

We've successfully replaced structuredClone in the jest environment with a local implementation as a workaround, but I believe the best thing to do would be to prefer Array.isArray over instanceof Array (and for all other data types ect) to avoid the problem entirely.

Steps to reproduce

Tests to reproduce:

describe('structuredClone instanceof Array', () => {
  test('preserves instanceof Array after structuredClone', () => {
    const original = [1, 2, 3]
    const cloned = structuredClone(original)

    expect(Array.isArray(original)).toBe(true) // true
    expect(Array.isArray(cloned)).toBe(true) // true

    expect(original instanceof Array).toBe(true) // true
    expect(cloned instanceof Array).toBe(true) // false
  })

  test('adds an element to an array field on a Parse Object', async () => {
    const entity = await new Parse.Object('SomeClass').save(
      { someField: ['value1', 'value2'] },
      { useMasterKey: true }
    )

    entity.addUnique('someField', 'value3')
    await container.save(null, { useMasterKey: true })

    const fetched = await new Parse.Query('SomeClass').get(entity.id, { useMasterKey: true })
    expect(fetched.get('someField')).toEqual(['value1', 'value2', 'value3']) // throws "objects to add must be array"
  })
})

Actual Outcome

The schema throws "objects to add must be array" incorrectly.

Expected Outcome

Schema to validate array as array

Environment

node@20.19.4
jest@29.6.2
parse-server@8.6.44

Server

• Parse Server version: 8.6.44
• Operating system: Mac OS
• Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc): local

Database

• System (MongoDB or Postgres): MongoDB
• Database version: 8
• Local or remote host (MongoDB Atlas, mLab, AWS, Azure, Google Cloud, etc): local

Start with the reproduced Jest tests and trace the schema validation reached by Parse.Object.addUnique after structuredClone. Confirm how array values are identified across the affected validation path, then run the reproduction and relevant schema tests; done means arrays cloned in Jest validate correctly without the false "objects to add must be array" error.