@/CivicSignalBlog - Implicit imports not working for Subpath Import Aliases

As described in PR #902

This is a minor issue and shouldn't be a blocker, but it would be nice to address, so it’s worth exploring.

After switching to [Subpath Import Aliases](https://nodejs.org/api/packages.html#subpath-imports), we are currently required to explicitly include the filename in all our imports, even when an `index.js` file is present. As a result, you may encounter imports like:

```
import slug from "#civicsignalblog/payload/fields/slug/index";
```

Instead of

```
import slug from "#civicsignalblog/payload/fields/slug";
```

It would be much better if we can find a clean and reusable way to automatically resolve `index.js` file from our import paths.