Fix flaky test `rest query query internal field`

[mtrezza]

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Issue Description

Fix flaky test rest query query internal field.

https://github.com/parse-community/parse-server/blob/453a9879efedc98d942e0c0d3c9254ae5cd4858b/spec/RestQuery.spec.js#L195

The test is currently in the flaky test list:

https://github.com/parse-community/parse-server/blob/9fd707092eeb431b7165b79b329bbd4b58be6942/spec/support/CurrentSpecReporter.js#L15-L16

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