Feature Request: Support MockRenderFactory conditional binding to keep component default values

[eliasm307]

Describe the feature or problem you'd like to solve

First of all, thanks for this great library, its really useful!

MockRender supports providing an empty object, or omitting some params/inputs to allow default values to be used, ie see https://ng-mocks.sudo.eu/api/MockRender#empty-params

However, for MockRenderFactory this doesnt seem to be possible, ie for the following example in the docs, input1 is explicitly set, however for input2 it seems this input also receives an undefined value which overwrites the component's default value

  const factory = MockRenderFactory(MyComponent, ['input1', 'input2']);
  
  ...

  it('covers one case', () => {
    const fixture = factory({input1: 1});
    expect(fixture.point.componentInstance.input1).toEqual(1);
  });

Also, if I am missing something please let me know.

Proposed solution

Would it be possible for cases like the above to keep the default value if the input value is not explicitly defined? ie for the case above input2 would not be set at all and the default value would be used, or no setters would be called in the component

Additional context

N/A