doc: update toHaveBeenCalledWith to include type of equality check

[byrne-greg]

Summary

The documentation for .toHaveBeenCalledWith doesn't state the type of equality check performed on the argument.

This means that anyone expecting the object argument used in the mock function .toStrictEqual the passed argument will be confused as the call is actually .toEqual and doesn't compare object classes.

 FAIL  ./index.test.js
  ✕ toHaveBeenCalledWith doesn't compare objects strictly (22 ms)

  ● toHaveBeenCalledWith doesn't compare objects strictly

    expect(received).toStrictEqual(expected) // deep equality

    - Expected  - 1
    + Received  + 1

    - Object {
    + AClass {
        "id": 1,
        "name": "Parent A",
      }

       9 |   expect(utils.f2).toHaveBeenCalledWith(data) // passes
      10 |   expect(utils.f2.mock.calls[0][0]).toEqual(data) // passes
    > 11 |   expect(utils.f2.mock.calls[0][0]).toStrictEqual(data) // fails  
         |                                     ^
      12 | })
      13 | 

See https://github.com/byrne-greg/jest-toHaveBeenCalledWith-equal-example/blob/main/index.test.js as an example

Test plan

[SimenB]

Landed via #12222 I believe, sorry I missed this PR!

[github-actions]

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