Convert closures to arrow functions in the Model class

[alikhosravidev]

This PR refactors the Model class by converting closures to arrow functions in the following methods:

incrementQuietly
decrementQuietly
refresh (specifically within the BaseCollection::reject call).

Motivation:
Improved Readability: Arrow functions make the code more concise and readable, reducing the need for the use keyword to pass variables into closures.

Changes

• Replaced closures with arrow functions in the aforementioned methods.
• No changes to the logic or behavior of the code were made.

[shayan041ir]

It's really wonderful, well done.

[milladka]

You implemented a good method.