Pre-emptively update the S3 model with transform (#3213)

## Motivation and Context
S3 models is being updated but this creates issues with
examples-compilation. This fixes that issue by pre-emptively updating
the model so we can synchronize codegen and examples updates

## Testing
- [x] generated S3, verified the same compilation errors

## Checklist
<!--- If a checkbox below is not applicable, then please DELETE it
rather than leaving it unchecked -->
- [ ] I have updated `CHANGELOG.next.toml` if I made changes to the
smithy-rs codegen or runtime crates
- [ ] I have updated `CHANGELOG.next.toml` if I made changes to the AWS
SDK, generated SDK code, or SDK runtime crates

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