Make error message more verbose.

[dmitry-mukhin]

Terraform Version

# Copy-paste output from `terraform -v`
Terraform v1.9.7
on linux_amd64
+ provider registry.terraform.io/fastly/fastly v5.12.0

Affected Fastly Terraform Resource(s)

Please list the affected resources, for example:

• fastly_tls_subscription

Terraform Configuration Files

# Copy-paste your Terraform configuration here.
resource "fastly_tls_subscription" "tls" {
  domains               = [for domain in var.tls_domains : domain]
  certificate_authority = var.certificate_authority
}

Expected Behavior

We have a lot of services.
I'm expecting to see more verbose error message when something like this occurs, so I can see that subscription(s) and what domain(s) cause the problem.

Actual Behavior

I see a bunch of errors that indicate what happend but not to which resources.

Debug Output (optional)

│ Error: 400 - Bad Request:
│ 
│     Title:  Can't delete subscription
│     Detail: Subscription has active domains
│ 
│ 
╵
╷
│ Error: 400 - Bad Request:
│ 
│     Title:  Can't delete subscription
│     Detail: Subscription has active domains
│ 
│ 
╵
╷
│ Error: 400 - Bad Request:
│ 
│     Title:  Can't delete subscription
│     Detail: Subscription has active domains
│ 
│ 
...

Steps to Reproduce

1. remove some subsctriptions from the configuration
2. run terraform apply

Important Factoids (optional)

We're running 100s of services.