IBM Cloud Terraform provider 1.72.0 version fails to target IAM endpoint via file

[hkantare]

HI team, find when upgraded to v1.72.0, it no longer honor setting in endpoints. here is the way to reproduce
with provider.tf
provider "ibm" {
ibmcloud_api_key = var.ibmcloud_api_key
region = "us-south"
endpoints_file_path = "endpoints-testcloud.json"
visibility = "public"
}
and endpoints-testcloud.json file as
{
"IBMCLOUD_IAM_API_ENDPOINT":{
"public":{
"us-south":"https://iam.test.cloud.ibm.com/"
}
},
"IBMCLOUD_IAMPAP_API_ENDPOINT":{
"public":{
"us-south":"https://iam.test.cloud.ibm.com/"
}
}
}
it still talking to https://iam.cloud.ibm.com/ instead of https://iam.test.cloud.ibm.com/
this works fine in v1.71.3
can someone help check
I can simple test it with
data "ibm_iam_account_settings" "iam_account_settings" {
}