Checkboxes in the UI don't toggle boolean variables

[glennmusa]

Description

When trying to create the create_bastion_jumpbox form field to support toggling the creation of Bastion and Windows VM Jumpboxes on a deployment, I'm unable to override the default value of true, the browser always renders an unchecked checkbox, and the checkbox state seems to have no effect on the variable value as the bastion host and jumpbox are always deployed.

Steps to Reproduce

1. Add a boolean that defaults to true to the UI in *.front.json
2. Deploy the UI
3. Deploy the configuration

Expected behavior

The checkbox state toggles the corresponding terraform variable true/false

Actual behavior

The checkbox state is irrelevant and the corresponding terraform variable value is always true.

Snippets

If I set up a saca-hub.front.json like this:

{
  "varname": "create_bastion_jumpbox",
  "type": "boolean",
  "default_val": true,
  "description": "Create a bastion host and jumpbox VM?",
  "options": []
},

and saca-hub.orig.tfvars.json like this:

  "create_bastion_jumpbox": false,

and the saca-hub/variables.tf like this:

variable "create_bastion_jumpbox" {
  description = "Create a bastion host and jumpbox VM?"
  type        = bool
  default     = true
}

the UI will render this:

and no matter if I toggle that checkbox or not, the resources always treat the variable as if it is truthy:

cd exec_output && cat exec.txt
...
module.bastion-host[0].azurerm_subnet.bastion_host_subnet: Creating...
...

[glennmusa]

cc @Breanna-Stryker