Setting auth_login_cert causes a panic with v3.17.0+

[nvx]

Crash after updating provider to v3.17.0, v3.16.0 doesn't exhibit the crash, but cert login doesn't work in that version.

Terraform Version

Terraform v1.5.1

Provider Config

provider "vault" {
  alias = "dc"
  address = var.vault_addr
  auth_login_cert {
    cert_file = "/local/vault-auth.pem"
    key_file = "/secrets/vault-auth-key.pem"
  }
}

Panic Output

Error: Plugin did not respond

  with provider["registry.terraform.io/hashicorp/vault"].dc,
  on main.tf line 13, in provider "vault":
  13: provider "vault" {

The plugin encountered an error, and failed to respond to the
plugin.(*GRPCProvider).ConfigureProvider call. The plugin logs may contain
more details.

Stack trace from the terraform-provider-vault_v3.17.0_x5 plugin:

panic: interface conversion: http.RoundTripper is *helper.transport, not *http.Transport

goroutine 24 [running]:
github.com/hashicorp/vault/api.(*Config).configureTLS(0xc0001acff0, 0xc000d35270)
	github.com/hashicorp/vault/api@v1.8.1/client.go:276 +0x509
github.com/hashicorp/vault/api.(*Config).ConfigureTLS(0xc0001acff0, 0xc000d2df50?)
	github.com/hashicorp/vault/api@v1.8.1/client.go:334 +0x7a
github.com/hashicorp/terraform-provider-vault/internal/provider.(*AuthLoginCert).Login(0xc000d52090, 0xc000d1e1e0)
	github.com/hashicorp/terraform-provider-vault/internal/provider/auth_cert.go:143 +0x2cc
github.com/hashicorp/terraform-provider-vault/internal/provider.NewProviderMeta(0xc000d28500)
	github.com/hashicorp/terraform-provider-vault/internal/provider/meta.go:252 +0xa99
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Provider).Configure(0xc0002862a0, {0x184ebf0, 0xc000d2cc90}, 0xd?)
	github.com/hashicorp/terraform-plugin-sdk/v2@v2.16.0/helper/schema/provider.go:287 +0x18f
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*GRPCProviderServer).ConfigureProvider(0xc0009452a8, {0x184eb48?, 0xc000af8600?}, 0xc0008404f8)
	github.com/hashicorp/terraform-plugin-sdk/v2@v2.16.0/helper/schema/grpc_provider.go:557 +0x345
github.com/hashicorp/terraform-plugin-go/tfprotov5/tf5server.(*server).Configure(0xc0001fac80, {0x184ebf0?, 0xc000d16150?}, 0xc000af8340)
	github.com/hashicorp/terraform-plugin-go@v0.9.0/tfprotov5/tf5server/server.go:555 +0x2ef
github.com/hashicorp/terraform-plugin-go/tfprotov5/internal/tfplugin5._Provider_Configure_Handler({0x13e53e0?, 0xc0001fac80}, {0x184ebf0, 0xc000d16150}, 0xc000d24000, 0x0)
	github.com/hashicorp/terraform-plugin-go@v0.9.0/tfprotov5/internal/tfplugin5/tfplugin5_grpc.pb.go:331 +0x170
google.golang.org/grpc.(*Server).processUnaryRPC(0xc0001bed20, {0x1853ae0, 0xc00097e000}, 0xc000b185a0, 0xc00094e450, 0x2146418, 0x0)
	google.golang.org/grpc@v1.50.0/server.go:1318 +0xb2b
google.golang.org/grpc.(*Server).handleStream(0xc0001bed20, {0x1853ae0, 0xc00097e000}, 0xc000b185a0, 0x0)
	google.golang.org/grpc@v1.50.0/server.go:1659 +0xa2f
google.golang.org/grpc.(*Server).serveStreams.func1.2()
	google.golang.org/grpc@v1.50.0/server.go:955 +0x98
created by google.golang.org/grpc.(*Server).serveStreams.func1
	google.golang.org/grpc@v1.50.0/server.go:953 +0x28a

Error: The terraform-provider-vault_v3.17.0_x5 plugin crashed!

This is always indicative of a bug within the plugin. It would be immensely
helpful if you could report the crash with the plugin's maintainers so that it
can be fixed. The output above should help diagnose the issue.