[BUG]:drizzle-kit generate and push failling with " Error input.replace is not a function"

### Report hasn't been filed before.

- [x] I have verified that the bug I'm about to report hasn't been filed before.

### What version of `drizzle-orm` are you using?

rc-4

### What version of `drizzle-kit` are you using?

rc-4

### Other packages

_No response_

### Describe the Bug

I upgraded from the latest stable release to the RC version and updated all of my schemas and relations to follow the RC-4 syntax across hundreds of schema files. I also ran `drizzle-kit up`, which successfully upgraded hundreds of migration files.

After the upgrade, I made multiple deployments that didn't require any schema changes, so everything worked as expected. However, a few days ago I introduced a new schema and added a new value to an existing enum. When I attempted to run `generate`, it failed with the following error:

```
Error: input.replace is not a function
```

I posted about this in the Discord server but haven't received a response yet.

This is a production project that has been using Drizzle since 2024, so the change was time-sensitive. As a workaround, I had to execute a raw SQL `ALTER TYPE` statement through Drizzle Gateway against the production database to add the enum value, which was far from ideal but necessary.

What's interesting is that `drizzle-kit migrate` still completes successfully and reports no pending changes. However, both `drizzle-kit generate` and `drizzle-kit push` fail with the same `input.replace is not a function` error.

I'd appreciate it if someone could take a look. I'm happy to provide any additional information, logs, configuration, or a minimal reproduction if needed.

Start by reproducing the failure with drizzle-kit rc-4 after adding an enum value, running both generate and push, and compare the successful migrate command. Review the available configuration, logs, and any minimal reproduction; done means generate and push complete without the input.replace error while preserving the enum change.

Written by the indexing model from the issue text.