Add additional tests for Rule::array validation scenarios

[alikhosravidev]

This PR adds new test cases for the Rule::array validation to cover a variety of scenarios and ensure correct behavior:

Formatting Tests:

• Ensures that an empty array ([]) is formatted as 'array'.
• Verifies that arrays with duplicate keys (e.g., ['key_1', 'key_1']) are correctly formatted with repeated keys.
• Confirms that arrays with numeric values (e.g., [1, 2, 3]) are formatted as expected.
• Object Input: Verifies that Rule::array fails validation when an object is provided instead of an array.
• Nullable Arrays: Ensures that arrays marked as nullable pass validation when given a null value.
• Empty Arrays: Confirms that empty arrays pass validation with Rule::array.
• Nested Empty Values: Tests Rule::array with nested empty arrays to ensure correct behavior.

These additions improve the test coverage for Rule::array validation, ensuring it handles different input types and edge cases as expected.

[alikhosravidev]

Added a new test case for the getCount method in DatabasePresenceVerifier to verify the behavior with a valid excludeId condition.

This ensures that when a valid excludeId is provided, the appropriate where condition for 'id' is applied correctly.