b/aws_ecs_service: fix VPC Lattice configuration removal

[marcinbelczewski]

Description

This PR:

• fixes the problem with VPC Lattice configuration removal from aws_ecs_service. ECS API requires empty array to be passed in UpdateService request for that and currently null is being passed.
• fixes TestAccECSService_LatticeConfigurations test - currently two nginx containers conflict on port 80 and in reality the service would never start properly, IPv6 configuration amended.
• amends aws_vpclattice_target_group configuration so that delete request can be sent while the targets are still draining (that will happen for example during acceptance tests of aws_ecs_service)

Relations

Closes #41600.
Closes #41601.

References

Output from Acceptance Testing

%make testacc TESTS=TestAccECSService_LatticeConfigurations PKG=ecs
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.5 test ./internal/service/ecs/... -v -count 1 -parallel 20 -run='TestAccECSService_LatticeConfigurations'  -timeout 360m -vet=off
2025/02/27 21:26:53 Initializing Terraform AWS Provider...
=== RUN   TestAccECSService_LatticeConfigurations
=== PAUSE TestAccECSService_LatticeConfigurations
=== CONT  TestAccECSService_LatticeConfigurations
--- PASS: TestAccECSService_LatticeConfigurations (384.75s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/ecs	391.282s

[github-actions]

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[ewbankkit]

LGTM 🚀.

% make testacc TESTARGS='-run=TestAccECSService_LatticeConfigurations\|TestAccECSService_basic' PKG=ecs
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.5 test ./internal/service/ecs/... -v -count 1 -parallel 20  -run=TestAccECSService_LatticeConfigurations\|TestAccECSService_basic -timeout 360m -vet=off
2025/02/28 10:51:28 Initializing Terraform AWS Provider...
=== RUN   TestAccECSService_basic
=== PAUSE TestAccECSService_basic
=== RUN   TestAccECSService_basicImport
=== PAUSE TestAccECSService_basicImport
=== RUN   TestAccECSService_LatticeConfigurations
=== PAUSE TestAccECSService_LatticeConfigurations
=== CONT  TestAccECSService_basic
=== CONT  TestAccECSService_LatticeConfigurations
=== CONT  TestAccECSService_basicImport
--- PASS: TestAccECSService_basic (69.48s)
--- PASS: TestAccECSService_basicImport (195.62s)
--- PASS: TestAccECSService_LatticeConfigurations (565.70s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/ecs	571.236s

% make testacc TESTARGS='-run=TestAccVPCLatticeTargetGroup_' PKG=vpclattice ACCTEST_PARALLELISM=3
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.5 test ./internal/service/vpclattice/... -v -count 1 -parallel 3  -run=TestAccVPCLatticeTargetGroup_ -timeout 360m -vet=off
2025/02/28 11:32:31 Initializing Terraform AWS Provider...
=== RUN   TestAccVPCLatticeTargetGroup_basic
=== PAUSE TestAccVPCLatticeTargetGroup_basic
=== RUN   TestAccVPCLatticeTargetGroup_disappears
=== PAUSE TestAccVPCLatticeTargetGroup_disappears
=== RUN   TestAccVPCLatticeTargetGroup_tags
=== PAUSE TestAccVPCLatticeTargetGroup_tags
=== RUN   TestAccVPCLatticeTargetGroup_lambda
=== PAUSE TestAccVPCLatticeTargetGroup_lambda
=== RUN   TestAccVPCLatticeTargetGroup_lambdaEventStructureVersion
=== PAUSE TestAccVPCLatticeTargetGroup_lambdaEventStructureVersion
=== RUN   TestAccVPCLatticeTargetGroup_ip
=== PAUSE TestAccVPCLatticeTargetGroup_ip
=== RUN   TestAccVPCLatticeTargetGroup_alb
=== PAUSE TestAccVPCLatticeTargetGroup_alb
=== CONT  TestAccVPCLatticeTargetGroup_basic
=== CONT  TestAccVPCLatticeTargetGroup_lambdaEventStructureVersion
=== CONT  TestAccVPCLatticeTargetGroup_alb
--- PASS: TestAccVPCLatticeTargetGroup_lambdaEventStructureVersion (17.21s)
=== CONT  TestAccVPCLatticeTargetGroup_tags
--- PASS: TestAccVPCLatticeTargetGroup_tags (32.40s)
=== CONT  TestAccVPCLatticeTargetGroup_ip
--- PASS: TestAccVPCLatticeTargetGroup_basic (71.47s)
=== CONT  TestAccVPCLatticeTargetGroup_lambda
--- PASS: TestAccVPCLatticeTargetGroup_lambda (17.60s)
=== CONT  TestAccVPCLatticeTargetGroup_disappears
--- PASS: TestAccVPCLatticeTargetGroup_alb (87.80s)
--- PASS: TestAccVPCLatticeTargetGroup_ip (80.83s)
--- PASS: TestAccVPCLatticeTargetGroup_disappears (63.23s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/vpclattice	153.457s

[ewbankkit]

@marcinbelczewski Thanks for the contribution 🎉 👏.