Pass result to query.post() hooks

[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

Re: #15898, query.post() hooks should receive the query result as a parameter:

query.post(function(result) {
  if (result.deletedCount > 0) {
    // Handle successful delete
  }
});

Motivation

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Example

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