fix: prevent unnecessary updates when cpu_options is unset

[edersonbrilhante]

This PR will replace:

cpu_options {
  core_count       = var.cpu_options != null ? var.cpu_options.core_count : null
  threads_per_core = var.cpu_options != null ? var.cpu_options.threads_per_core : null
}

with:

dynamic "cpu_options" {
  for_each = var.cpu_options != null ? [var.cpu_options] : []
  content {
    core_count       = try(cpu_options.value.core_count, null)
    threads_per_core = try(cpu_options.value.threads_per_core, null)
  }
}

This way, if cpu_options is not set, Terraform will not force a resource update every time.

This issue was introduced in PR #4789

[Copilot]

Pull Request Overview

This PR fixes an issue where Terraform would force unnecessary resource updates by replacing a static cpu_options block with a dynamic one that only creates the block when cpu_options is actually set.

• Replaces static cpu_options block with dynamic block to prevent forced updates
• Uses conditional for_each to only create the block when var.cpu_options is not null
• Updates field access to use cpu_options.value syntax within the dynamic block

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[npalm]

@edersonbrilhante thx