terraform plan errors when the provider's default project is unknown during plan

[queeno]

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Terraform Version

terraform plan -v
Terraform v1.6.0
on darwin_arm64
+ provider registry.terraform.io/hashicorp/google v5.0.0
+ provider registry.terraform.io/hashicorp/random v3.5.1

Affected Resource(s)

• google_service_account

Terraform Configuration Files

provider "google" {}

provider "google" {
  alias = "test_project"
  project = google_project.test.project_id
}

resource "random_string" "string" {
  length = "6"
}

resource "google_project" "test" {
  name = "my-test-project"
  project_id = "my-test-project-${random_string.string.result}"
  org_id = "123456789"
}

resource "google_service_account" "test" {
  provider = google.test_project
  display_name = "test-service-account"
  account_id = "test-service-account"
}

Debug Output

TF plan output

Expected Behavior

A plan should have been created.

Actual Behavior

The following error is observed:

╷
│ Error: 1 error occurred:
│       * Failed to retrieve project, pid: , err: project: required field is not set
│
│
│
│   with google_service_account.test,
│   on project.tf line 26, in resource "google_service_account" "test":
│   26: resource "google_service_account" "test" {
│

Steps to Reproduce

1. terraform plan