internal/acctest: add provider_meta config, smoke tests

Plugin SDK V2 based resource:

```console
% make t K=logs T=TestAccLogsLogGroup_providerMeta
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
make: Running acceptance tests on branch: 🌿 f-provider-meta-simple 🌿...
TF_ACC=1 go1.24.11 test ./internal/service/logs/... -v -count 1 -parallel 20 -run='TestAccLogsLogGroup_providerMeta'  -timeout 360m -vet=off
2025/12/08 13:31:36 Creating Terraform AWS Provider (SDKv2-style)...
2025/12/08 13:31:36 Initializing Terraform AWS Provider (SDKv2-style)...

--- PASS: TestAccLogsLogGroup_providerMeta (14.83s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/logs       21.333s
```

Plugin Framework based resource:

```console
% make t K=iot T=TestAccIoTBillingGroup_providerMeta
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
make: Running acceptance tests on branch: 🌿 f-provider-meta-simple 🌿...
TF_ACC=1 go1.24.11 test ./internal/service/iot/... -v -count 1 -parallel 20 -run='TestAccIoTBillingGroup_providerMeta'  -timeout 360m -vet=off
2025/12/08 13:26:38 Creating Terraform AWS Provider (SDKv2-style)...
2025/12/08 13:26:38 Initializing Terraform AWS Provider (SDKv2-style)...

--- PASS: TestAccIoTBillingGroup_providerMeta (14.89s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/iot        21.397s
```

Author: jar-b

internal/acctest/configs.go

@@ -318,6 +318,19 @@ provider "aws" {
 `, os.Getenv(envvar.AccAssumeRoleARN), policy)
 }
 
+// ConfigProviderMeta returns a terraform block with provider_meta configured
+func ConfigProviderMeta() string {
+	return `
+terraform {
+  provider_meta "aws" {
+    user_agent = [
+      "test-module/0.0.1 (test comment)",
+    ]
+  }
+}
+`
+}
+
 const testAccProviderConfigBase = `
 data "aws_region" "provider_test" {}
 

internal/service/iot/billing_group_test.go

@@ -632,6 +632,37 @@ func TestAccIoTBillingGroup_requiredTags_disabled(t *testing.T) {
 	})
 }
 
+// A smoke test to verify setting provider_meta does not trigger unexpected
+// behavior for Plugin Framework based resources
+func TestAccIoTBillingGroup_providerMeta(t *testing.T) {
+	ctx := acctest.Context(t)
+	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
+	resourceName := "aws_iot_billing_group.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:                 func() { acctest.PreCheck(ctx, t) },
+		ErrorCheck:               acctest.ErrorCheck(t, names.IoTServiceID),
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
+		CheckDestroy:             testAccCheckBillingGroupDestroy(ctx),
+		Steps: []resource.TestStep{
+			{
+				Config: acctest.ConfigCompose(
+					acctest.ConfigProviderMeta(),
+					testAccBillingGroupConfig_basic(rName),
+				),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					testAccCheckBillingGroupExists(ctx, resourceName),
+				),
+			},
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}
+
 func testAccCheckBillingGroupExists(ctx context.Context, n string) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		rs, ok := s.RootModule().Resources[n]

internal/service/logs/group_test.go

@@ -800,6 +800,38 @@ func TestAccLogsLogGroup_deletionProtectionEnabled(t *testing.T) {
 	})
 }
 
+// A smoke test to verify setting provider_meta does not trigger unexpected
+// behavior for Plugin SDK V2 based resources
+func TestAccLogsLogGroup_providerMeta(t *testing.T) {
+	ctx := acctest.Context(t)
+	var v types.LogGroup
+	rName := acctest.RandomWithPrefix(t, acctest.ResourcePrefix)
+	resourceName := "aws_cloudwatch_log_group.test"
+
+	acctest.ParallelTest(ctx, t, resource.TestCase{
+		PreCheck:                 func() { acctest.PreCheck(ctx, t) },
+		ErrorCheck:               acctest.ErrorCheck(t, names.LogsServiceID),
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
+		CheckDestroy:             testAccCheckLogGroupDestroy(ctx, t),
+		Steps: []resource.TestStep{
+			{
+				Config: acctest.ConfigCompose(
+					acctest.ConfigProviderMeta(),
+					testAccGroupConfig_basic(rName),
+				),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					testAccCheckLogGroupExists(ctx, t, resourceName, &v),
+				),
+			},
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}
+
 func testAccCheckLogGroupExists(ctx context.Context, t *testing.T, n string, v *types.LogGroup) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		rs, ok := s.RootModule().Resources[n]