Nested resources are evaluated differently

[ConsoleTVs]

System (please complete the following information):

• OS: macOS
• GO Version: 1.20
• Pkg Version: 1.4.6

Describe the bug

Nested resources are evaluated differently. This is super confusing and buggy.

To Reproduce

https://go.dev/play/p/-4zzXj4NxLK

package main

import (
	"fmt"

	"github.com/gookit/validate"
)

type Sample struct {
	Val *bool `validate:"required"`
}

type Nested struct {
	Samples []Sample `validate:"slice"`
}

func main() {
	val, val2 := false, true

	data := Sample{
		Val: &val,
	}

	data2 := Sample{
		Val: &val2,
	}

	data3 := Sample{
		Val: nil,
	}

	data4 := Nested{
		Samples: []Sample{data, data2},
	}

	v1 := validate.Struct(data)
	ok1 := v1.Validate()

	v2 := validate.Struct(data2)
	ok2 := v2.Validate()

	v3 := validate.Struct(data3)
	ok3 := v3.Validate()

	v4 := validate.Struct(data4)
	ok4 := v4.Validate()

	fmt.Println(ok1, v1.Errors) // Should not fail and does not fail.
	fmt.Println(ok2, v2.Errors) // Should not fail and does not fail.
	fmt.Println(ok3, v3.Errors) // Should fail and fails.
	fmt.Println(ok4, v4.Errors) // Should not fail and fails.
}

Expected behavior

The Nested data structure at data4 should validate correctly.

Screenshots

n/a

Additional context

n/a