Partial reversion of Replace 'tfslices.Chunks' with 'slices.Chunk' - …

…autoscaling.

```console
% make testacc TESTARGS='-run=TestAccAutoScalingGroup_basic\|TestAccAutoScalingGroup_withTrafficSourcesELBs\|TestAccAutoScalingGroup_loadBalancers\|TestAccAutoScalingGroup_targetGroups' PKG=autoscaling
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.6 test ./internal/service/autoscaling/... -v -count 1 -parallel 20  -run=TestAccAutoScalingGroup_basic\|TestAccAutoScalingGroup_withTrafficSourcesELBs\|TestAccAutoScalingGroup_loadBalancers\|TestAccAutoScalingGroup_targetGroups -timeout 360m

--- PASS: TestAccAutoScalingGroup_basic (28.41s)
--- PASS: TestAccAutoScalingGroup_targetGroups (108.44s)
--- PASS: TestAccAutoScalingGroup_loadBalancers (287.88s)
--- PASS: TestAccAutoScalingGroup_withTrafficSourcesELBs (374.16s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/autoscaling        380.382s
```

internal/service/autoscaling/group.go

@@ -8,7 +8,6 @@ import ( // nosemgrep:ci.semgrep.aws.multiple-service-imports
 	"errors"
 	"fmt"
 	"log"
-	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -35,6 +34,7 @@ import ( // nosemgrep:ci.semgrep.aws.multiple-service-imports
 	"github.com/hashicorp/terraform-provider-aws/internal/errs/sdkdiag"
 	"github.com/hashicorp/terraform-provider-aws/internal/flex"
 	"github.com/hashicorp/terraform-provider-aws/internal/sdkv2/types/nullable"
+	tfslices "github.com/hashicorp/terraform-provider-aws/internal/slices"
 	"github.com/hashicorp/terraform-provider-aws/internal/tfresource"
 	"github.com/hashicorp/terraform-provider-aws/internal/verify"
 	"github.com/hashicorp/terraform-provider-aws/names"
@@ -1504,7 +1504,7 @@ func resourceGroupUpdate(ctx context.Context, d *schema.ResourceData, meta inter
 
 		// API only supports adding or removing 10 at a time.
 		batchSize := 10
-		for chunk := range slices.Chunk(expandTrafficSourceIdentifiers(os.Difference(ns).List()), batchSize) {
+		for _, chunk := range tfslices.Chunks(expandTrafficSourceIdentifiers(os.Difference(ns).List()), batchSize) {
 			input := &autoscaling.DetachTrafficSourcesInput{
 				AutoScalingGroupName: aws.String(d.Id()),
 				TrafficSources:       chunk,
@@ -1521,7 +1521,7 @@ func resourceGroupUpdate(ctx context.Context, d *schema.ResourceData, meta inter
 			}
 		}
 
-		for chunk := range slices.Chunk(expandTrafficSourceIdentifiers(ns.Difference(os).List()), batchSize) {
+		for _, chunk := range tfslices.Chunks(expandTrafficSourceIdentifiers(ns.Difference(os).List()), batchSize) {
 			input := &autoscaling.AttachTrafficSourcesInput{
 				AutoScalingGroupName: aws.String(d.Id()),
 				TrafficSources:       chunk,
@@ -1545,7 +1545,7 @@ func resourceGroupUpdate(ctx context.Context, d *schema.ResourceData, meta inter
 
 		// API only supports adding or removing 10 at a time.
 		batchSize := 10
-		for chunk := range slices.Chunk(flex.ExpandStringValueSet(os.Difference(ns)), batchSize) {
+		for _, chunk := range tfslices.Chunks(flex.ExpandStringValueSet(os.Difference(ns)), batchSize) {
 			input := &autoscaling.DetachLoadBalancersInput{
 				AutoScalingGroupName: aws.String(d.Id()),
 				LoadBalancerNames:    chunk,
@@ -1562,7 +1562,7 @@ func resourceGroupUpdate(ctx context.Context, d *schema.ResourceData, meta inter
 			}
 		}
 
-		for chunk := range slices.Chunk(flex.ExpandStringValueSet(ns.Difference(os)), batchSize) {
+		for _, chunk := range tfslices.Chunks(flex.ExpandStringValueSet(ns.Difference(os)), batchSize) {
 			input := &autoscaling.AttachLoadBalancersInput{
 				AutoScalingGroupName: aws.String(d.Id()),
 				LoadBalancerNames:    chunk,
@@ -1586,7 +1586,7 @@ func resourceGroupUpdate(ctx context.Context, d *schema.ResourceData, meta inter
 
 		// API only supports adding or removing 10 at a time.
 		batchSize := 10
-		for chunk := range slices.Chunk(flex.ExpandStringValueSet(os.Difference(ns)), batchSize) {
+		for _, chunk := range tfslices.Chunks(flex.ExpandStringValueSet(os.Difference(ns)), batchSize) {
 			input := &autoscaling.DetachLoadBalancerTargetGroupsInput{
 				AutoScalingGroupName: aws.String(d.Id()),
 				TargetGroupARNs:      chunk,
@@ -1603,7 +1603,7 @@ func resourceGroupUpdate(ctx context.Context, d *schema.ResourceData, meta inter
 			}
 		}
 
-		for chunk := range slices.Chunk(flex.ExpandStringValueSet(ns.Difference(os)), batchSize) {
+		for _, chunk := range tfslices.Chunks(flex.ExpandStringValueSet(ns.Difference(os)), batchSize) {
 			input := &autoscaling.AttachLoadBalancerTargetGroupsInput{
 				AutoScalingGroupName: aws.String(d.Id()),
 				TargetGroupARNs:      chunk,
@@ -1864,7 +1864,7 @@ func drainGroup(ctx context.Context, conn *autoscaling.Client, name string, inst
 		}
 	}
 	const batchSize = 50 // API limit.
-	for chunk := range slices.Chunk(instanceIDs, batchSize) {
+	for _, chunk := range tfslices.Chunks(instanceIDs, batchSize) {
 		input := &autoscaling.SetInstanceProtectionInput{
 			AutoScalingGroupName: aws.String(name),
 			InstanceIds:          chunk,