[code-gen] Scalar fields produce inconsistent capitalization in error messages between runs of the code-generator

[knottnt]

Describe the bug
The error message produced for scalar fields in the boundary check for floats and ints has inconsistent capitalization of the field name between runs of the code-gen. This results in superfluous changes when making unrelated changes to controllers.

Steps to reproduce

1. Pull the latest changes for the ecs-controller repo
2. In code-generation re-run make build-controller
3. See that some float/int field names will have changed in error messages for the boundary check. Note, the individual fields that have changed aren't consistent.

example field name change.

return nil, fmt.Errorf("error: field iops is of type int32") -> return nil, fmt.Errorf("error: field Iops is of type int32")

Expected outcome
No changes besides ack-generate-meta.yaml are made to the controller.

Environment

• Kubernetes version: N/A
• Using EKS (yes/no), if so version? N/A
• AWS service targeted (S3, RDS, etc.) ECS, but this affects many controllers.

[github-actions]

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