Add ability to set EKS properties on batch

[danquack]

Description

This PR has a prerequisite dependency #34281 due to some exiting job changes.

This PR unlocks a test case for #34663.

Relations

Closes #29383

References

Output from Acceptance Testing

% make testacc TESTS=TestAccBatchJobDefinition_EKS PKG=batch                                                                                
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/batch/... -v -count 1 -parallel 20 -run='TestAccBatchJobDefinition_EKS'  -timeout 360m
=== RUN   TestAccBatchJobDefinition_EKSProperties_basic
=== PAUSE TestAccBatchJobDefinition_EKSProperties_basic
=== RUN   TestAccBatchJobDefinition_EKSProperties_update
=== PAUSE TestAccBatchJobDefinition_EKSProperties_update
=== CONT  TestAccBatchJobDefinition_EKSProperties_basic
=== CONT  TestAccBatchJobDefinition_EKSProperties_update
--- PASS: TestAccBatchJobDefinition_EKSProperties_basic (16.48s)
--- PASS: TestAccBatchJobDefinition_EKSProperties_update (25.06s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/batch      26.868s

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