asset {*} returns multiple rpc errors when connected to Terraform Plan

[scottford-io]

Describe the bug
I don't think this is limited to terraform-plan assets in the cnspec shell, if you connect to a tfplan.json and run asset {*}, multiple rpc errors are returned:

asset  {*}
2 errors occurred:
	* rpc error: code = Unknown desc = cannot find connection type terraform-plan
	* rpc error: code = Unknown desc = connection type is not supported for vSphere connection: terraform-plan
asset: {
  cpes: rpc error: code = Unknown desc = cannot find connection type terraform-plan
  kind: "code"
  build: ""
  version: ""
  title: "Terraform Plan"
  annotations: {}
  purl: rpc error: code = Unknown desc = cannot find connection type terraform-plan
  arch: ""
  labels: {}
  platform: "terraform-plan"
  vulnerabilityReport: rpc error: code = Unknown desc = connection type is not supported for vSphere connection: terraform-plan
  runtime: "terraform"
  ids: [
    0: "//platformid.api.mondoo.app/runtime/terraform/hash/3465e7b823cc2f0b67b0037f11f36e9ab46e76b75805761f748cbb1ecc1b1aaaa"
  ]
  name: "Terraform Static Analysis tfplan"
  fqdn: ""
  family: [
    0: "terraform"
  ]
}

To Reproduce
Steps to reproduce the behavior:

1. Create a tfplan.json
2. cnspec shell terraform plan tfplan.json
3. asset {*}

Expected behavior
We should handle asset fields that are not applicable without erroring out when connected to assets such as TF plan, k8s manifest, etc.

Screenshots or CLI Output
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• OS: [e.g. macOS]
• OS Version: [e.g. 13.0]
• Browser if applicable: [e.g. Chrome, Firefox]
• Browser Version: [e.g. 106]

Additional context
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