resource_checkpoint_gaia_static_route is unable to create a default route due to mask-length validation.

[simpcrs]

Provider version: ~> 3.2.0 (CheckPointSW/checkpoint)
Terraform version: >= 1.6.0
Resource affected: checkpoint_gaia_static_route

Description
mask_length is a required field, documented (and confirmed against the live Gaia API) to accept valid values 0-32. However, setting mask_length = 0 causes the API call to fail with:

Error: Failed to execute API call
Status: 400 BAD REQUEST
Code: err_validation_failed
Message: Validation Error
Errors: mask-length is required

despite mask_length being present and explicitly set in the Terraform config.

Steps to reproduce

resource "checkpoint_gaia_static_route" "default" {
  address     = "0.0.0.0"
  mask_length = 0
  type        = "gateway"

  next_hop {
    gateway  = "192.168.1.1"
    priority = "default"
  }
}

terraform apply then fails with "mask-length is required."

Verified via a raw API call (bypassing Terraform entirely) that the Gaia API itself accepts "mask-length": 0 without issue.