DARK:Enhance Value Checking Mechanism in Filter Processing

[Othman-Charai]

Description:
This PR addresses two main issues in our filter processing:

• Fixes the handling of zero values (0, 0.0, "0") mistakenly considered empty by empty(). This is crucial for correctly
  processing enum integer values, especially when 0 is a valid enum.
• Refines the use of isset() to include $filters['value'] = null in processing, acknowledging that filtering by null can be
  intentional and should be supported.

Outcome:

1. Zero values are now correctly processed, ensuring accurate filtering.
2. null values are intentionally included, offering greater flexibility in filter criteria.

QA
Run the following :
./vendor/bin/pest Tests/QueryFilterTest.php

• does 0 as filters[field] value supported context function check if 0 supported, before this change when you have value =0 then $queryFilter->getField() = null