Add option to skip invalid fields with castObject()

[vkarpov15]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the feature has not already been requested

🚀 Feature Proposal

Based on @AbdelrahmanHafez 's comments from #12120 (comment) . It would be nice to have an option that ignores invalid fields with castObject(), rather than throwing a CastError.

const Test = mongoose.model('Test', Schema({ name: String, age: Number }));

const res = Test.castObject({ name: 'John Smith', age: 'not a number' }, { ignoreCastErrors: true });

res.name; // 'John Smith'
res.age; // undefined

Motivation

Would be helpful if you want to use castObject() and want to take just the valid fields.

Example

No response