Module error on duplicate NSG names

[cliv]

If you cut and past this module to create multiple sets of network security policies and don't change the key name for your NSGs, the module will create both NSGs, then crash on any subsequent runs.

This TF should reproduce the error:

module "test1" {
  source = "github.com/oracle-terraform-modules/terraform-oci-tdf-network-security?ref=v0.9.7"

  default_compartment_id = oci_identity_compartment.this.id
  vcn_id                 = oci_core_vcn.this.id

  security_lists = {}
  nsgs = {
    test = {
       ....Trimmed for brevity, but the content here doesn't matter as long as it's valid...
     }
  }
}

module "test2" {
  source = "github.com/oracle-terraform-modules/terraform-oci-tdf-network-security?ref=v0.9.7"

  default_compartment_id = oci_identity_compartment.this.id
  vcn_id                 = oci_core_vcn.this.id

  security_lists = {}
  nsgs = {
    test = {
       ....Trimmed for brevity, but the content here doesn't matter as long as it's valid...
     }
  }
}

you can terraform apply this with no errors, but on subsequent runs, you get the following:

Error: Duplicate object key

  on .terraform/modules/test1/main_nsg.tf line 20, in locals:
  20:   remote_nsg_ids        = { for i in data.oci_core_network_security_groups.this.network_security_groups : i.display_name => i.id }
    |----------------
    | i.display_name is "test"

Two different items produced the key "test" in this 'for' expression. If
duplicates are expected, use the ellipsis (...) after the value expression to
enable grouping by key.


Error: Duplicate object key

  on .terraform/modules/test1/main_nsg.tf line 20, in locals:
  20:   remote_nsg_ids        = { for i in data.oci_core_network_security_groups.this.network_security_groups : i.display_name => i.id }
    |----------------
    | i.display_name is "test"

Two different items produced the key "test" in this 'for' expression. If
duplicates are expected, use the ellipsis (...) after the value expression to
enable grouping by key.